document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=962101>Question 962101</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Question 1 <BR>\n" );
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document.write( "You conduct a one-sample t test and find that t = -1.83. Your study has 81 participants. Your research hypothesis is directional. sketch a normal curve and draw vertical lines for and label from -3&#963;M to +3&#963;M, locate and label the tabled critical t, and locate and label the computed t. Can you reject the null hypothesis at &#945; = .01? <BR>\n" );
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document.write( "Yes\r<BR>\n" );
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document.write( "No \r<BR>\n" );
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document.write( "-no response \r<BR>\n" );
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document.write( "-no response \r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 2 <BR>\n" );
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document.write( "You conduct a one-sample t test and find that t = -1.83. Your study has 81 participants. Your research hypothesis is directional. sketch a normal curve and draw vertical lines for and label from -3&#963;M to +3&#963;M, locate and label the tabled critical t, and locate and label the computed t. Can you reject the null hypothesis at &#945; = .05? <BR>\n" );
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document.write( "Yes\r<BR>\n" );
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document.write( "No \r<BR>\n" );
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document.write( "More information is needed\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 3 <BR>\n" );
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document.write( "A researcher conducts a one-tailed one-sample t test on 25 subjects and finds that t = 1.89. How many degrees of freedom are in this study? <BR>\n" );
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document.write( "26\r<BR>\n" );
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document.write( "25\r<BR>\n" );
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document.write( "24\r<BR>\n" );
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document.write( "23\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 4 <BR>\n" );
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document.write( "A researcher conducts a one-tailed one-sample t test on 25 subjects and finds that t = 1.89. About what is the actual Type 1 error for the study? <BR>\n" );
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document.write( "Around 3%\r<BR>\n" );
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document.write( "Around 4%\r<BR>\n" );
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document.write( "Around 5%\r<BR>\n" );
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document.write( "Around 6%\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 5 <BR>\n" );
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document.write( "A researcher conducts a one-tailed one-sample t test on 25 subjects and finds that t = 1.89. How confident can the researcher be that the results are true and not due to mere sampling error? <BR>\n" );
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document.write( "Around 98%\r<BR>\n" );
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document.write( "Around 97%\r<BR>\n" );
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document.write( "Around 96%\r<BR>\n" );
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document.write( "Around 95%\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 6 <BR>\n" );
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document.write( "A researcher conducts a one-tailed one-sample t test on 25 subjects and finds that t = 1.89. Report the results as they would appear in an academic journal entry. <BR>\n" );
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document.write( "t(25) = 1.89, p = 6.6 <BR>\n" );
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document.write( "t(25) = 1.89, p = 4.8\r<BR>\n" );
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document.write( "t(25) = 1.89, p = 5.5 <BR>\n" );
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document.write( "t(25) = 1.89, p = 3.9 <BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 7 <BR>\n" );
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document.write( "A researcher conducts a two-tailed one-sample t test on 24 subjects and find that t = 1.89. How many degrees of freedom are in this study? <BR>\n" );
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document.write( "22\r<BR>\n" );
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document.write( "23\r<BR>\n" );
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document.write( "24\r<BR>\n" );
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document.write( "25\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 8 \r<BR>\n" );
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document.write( "A researcher conducts a two-tailed one-sample t test on 24 subjects and find that t = 1.89. About what is the actual Type 1 error for the study? <BR>\n" );
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document.write( "8%\r<BR>\n" );
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document.write( "15%\r<BR>\n" );
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document.write( "26%\r<BR>\n" );
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document.write( ".01%\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 9 <BR>\n" );
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document.write( "A researcher conducts a two-tailed one-sample t test on 24 subjects and find that t = 1.89. How confident can the researcher be that the results are true and not due to mere sampling error? <BR>\n" );
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document.write( ".05%\r<BR>\n" );
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document.write( "85%\r<BR>\n" );
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document.write( "92%\r<BR>\n" );
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document.write( "100%\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 10 <BR>\n" );
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document.write( "A researcher conducts a two-tailed one-sample t test on 24 subjects and find that t = 1.89. Report the results as they would appear in an academic journal. <BR>\n" );
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document.write( "t(23) =1.89, p=.08\r<BR>\n" );
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document.write( "t(23) =1.89, p=.99\r<BR>\n" );
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document.write( "t(23) =1.89, p=.25\r<BR>\n" );
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document.write( "t(23) =1.89, p=.11\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 11 <BR>\n" );
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document.write( "Calculate &#963;M1 - M2 for a study of self-esteem between the sexes, in which the value of &#963;M for women is 1.32 and that for men is 1.94.   <BR>\n" );
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document.write( "1.02\r<BR>\n" );
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document.write( "3.76\r<BR>\n" );
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document.write( "2.35\r<BR>\n" );
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document.write( "7.63\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 12 <BR>\n" );
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document.write( "In a study of the effect of a new drug on the alleviation of asthma symptoms, the &#963;M for symptom relief in the patient group that received the new drug is 1.45, and the &#963;M  for symptom relief in the group that did not receive the new drug is 1.22.  Calculate &#963; M1-M2<BR>\n" );
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document.write( "1.89\r<BR>\n" );
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document.write( "1.77\r<BR>\n" );
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document.write( "1.93\r<BR>\n" );
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document.write( "1.79\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 13 <BR>\n" );
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document.write( "Elena Martin is campaigning for the city council. . She has two types of lawn signs to distribute: large ones and small ones. She wonders if the size of the sign affects residents’ willingness to display the signs on their property. Early in the campaign, her staff obtain a list of homeowners in each of the city’s 10 voting districts who are registered in her political party and presumably not averse to advertising their support for her. The staff randomly selects homeowners in each of the 10 districts, to some of whom they send large signs and to others, small signs. Two weeks later, staff members drive by each home to which they sent the signs to record whether or not the sign is being displayed. Here are the percentages of homes displaying the signs in each district:\r<BR>\n" );
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document.write( "_______________________________\r<BR>\n" );
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document.write( "Large Sign<BR>\n" );
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document.write( "Small Sign<BR>\n" );
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document.write( "34<BR>\n" );
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document.write( "41<BR>\n" );
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document.write( "30<BR>\n" );
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document.write( "____________________________\r<BR>\n" );
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document.write( "Is the research hypothesis in this study directional or nondirectional?<BR>\n" );
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document.write( "directional\r<BR>\n" );
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document.write( "nondirectional\r<BR>\n" );
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document.write( "Not enough information\r<BR>\n" );
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document.write( "Both \r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 14 <BR>\n" );
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document.write( "Elena Martin is campaigning for the city council. . She has two types of lawn signs to distribute: large ones and small ones. She wonders if the size of the sign affects residents’ willingness to display the signs on their property. Early in the campaign, her staff obtain a list of homeowners in each of the city’s 10 voting districts who are registered in her political party and presumably not averse to advertising their support for her. The staff randomly selects homeowners in each of the 10 districts, to some of whom they send large signs and to others, small signs. Two weeks later, staff members drive by each home to which they sent the signs to record whether or not the sign is being displayed. Here are the percentages of homes displaying the signs in each district:\r<BR>\n" );
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document.write( "Large Signs<BR>\n" );
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document.write( "Small Signs<BR>\n" );
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document.write( "6<BR>\n" );
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document.write( "7<BR>\n" );
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document.write( "6<BR>\n" );
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document.write( "10<BR>\n" );
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document.write( "7<BR>\n" );
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document.write( "7<BR>\n" );
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document.write( "__________________________________\r<BR>\n" );
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document.write( "State the research hypothesis.<BR>\n" );
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document.write( "Not enough information\r<BR>\n" );
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document.write( "Voting district will differ by the preference of sign size \r<BR>\n" );
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document.write( "The effectiveness of the city counsel will effect the community's preference of sign size\r<BR>\n" );
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document.write( "   <BR>\n" );
document.write( "Homeowner’s willingness to display the campaign signs will differ by the size of the sign\r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 15 <BR>\n" );
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document.write( "Elena Martin is campaigning for the city council.  She has two types of lawn signs to distribute: large ones and small ones. She wonders if the size of the sign affects residents’ willingness to display the signs on their property. Early in the campaign, her staff obtain a list of homeowners in each of the city’ s 10 voting districts who are registered in her political party and presumably not averse to advertising their support for her. The staff randomly selects homeowners in each of the 10 districts, to some of whom they send large signs and to others, small signs. Two weeks later, staff members drive by each home to which they sent the signs to record whether or not the sign is being displayed.\r<BR>\n" );
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document.write( "Refer to question 4 on page 242 for the table.\r<BR>\n" );
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document.write( "Calculate t and compare it with the tabled critical t at the .01 &#945; level.  Can you reject the null hypothesis?<BR>\n" );
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document.write( "Yes\r<BR>\n" );
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document.write( "No \r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "Not enough information \r<BR>\n" );
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document.write( "Both \r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 16 <BR>\n" );
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document.write( "An Internet provider wonders if its cable Internet customers are significantly more satisfied with one or the other of its two packages -- free e-mail or free basic TV. The company surveys 12 customers currently receiving free e-mail with their cable Internet and 12 customers currently receiving free basic TV with their cable Internet.  Satisfaction scores range from 1 to 10 based on answers to the survey questions.  Here are the scores. Conduct a two-tailed t test at the .05 &#945; level.  Are the customers significantly more satisfied with one package or the other?<BR>\n" );
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document.write( "Reject the null hypothesis\r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "Do not reject the null hypothesis\r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "Not enough information \r<BR>\n" );
document.write( "\n" );
document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "Both \r<BR>\n" );
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document.write( " \r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 17 <BR>\n" );
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document.write( "An Internet provider wonders if its cable Internet customers are significantly more satisfied with one or the other of its two packages -- free e-mail or free basic TV. *The company surveys 12 customers currently receiving free e-mail with their cable Internet and 12 customers currently receiving free basic TV with their cable Internet.  Satisfaction scores range from 1 to 10 based on answers to the survey questions.  Conduct a two-tailed t test at the .05 &#945; level.  Are the customers significantly more satisfied with one package or the other? <BR>\n" );
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document.write( "Reject the null hypothesis \r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "Do not reject the null hypothesis\r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "Not enough information \r<BR>\n" );
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document.write( "   <BR>\n" );
document.write( "Both \r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 18 <BR>\n" );
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document.write( "A research conducts a one-tailed two-sample t test on 32 subjects (16 subjects in each group) and finds that t = 2.182.  How many degrees of freedom are there in this study?<BR>\n" );
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document.write( "32\r<BR>\n" );
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document.write( "   <BR>\n" );
document.write( "31\r<BR>\n" );
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document.write( "   <BR>\n" );
document.write( "30\r<BR>\n" );
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document.write( "   <BR>\n" );
document.write( "29\r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 19 <BR>\n" );
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document.write( " <BR>\n" );
document.write( "A research conducts a one-tailed two-sample t test on 32 subjects (16 subjects in each group) and finds that t = 2.182. About what is the actual Type 1 error for the study?<BR>\n" );
document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "between 2.5 and 3\r<BR>\n" );
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document.write( "between 0 and .05\r<BR>\n" );
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document.write( "between 3 and 3.5 \r<BR>\n" );
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document.write( "between 1 and 2.5\r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 20 <BR>\n" );
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document.write( "A research conducts a one-tailed two-sample t test on 32 subjects (16 subjects in each group) and finds that t = 2.182. How confident can the researcher be that the results are true and not due to mere sampling error?<BR>\n" );
document.write( " <BR>\n" );
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document.write( "Around 98% \r<BR>\n" );
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document.write( "Around 86% \r<BR>\n" );
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document.write( "Around 84% \r<BR>\n" );
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document.write( "Around 62% \r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 21 <BR>\n" );
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document.write( "A research conducts a one-tailed two-sample t test on 32 subjects (16 subjects in each group) and finds that t = 2.182. Report the results as they would appear in an academic journal. <BR>\n" );
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document.write( "t(30) = .05, p = .83\r<BR>\n" );
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document.write( "t(30) = .05, p = .02\r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "t(30) = 2.182, p = .02\r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "t(30) = 2.182, p = .83\r<BR>\n" );
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document.write( " \r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 22 <BR>\n" );
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document.write( "A researcher conducts a one-tailed independent samples t test on 20 subjects (10 subjects in each group) and finds that t = 2.32665.  How many degrees of freedom are in this study?<BR>\n" );
document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "18\r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "19\r<BR>\n" );
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document.write( "   <BR>\n" );
document.write( "20\r<BR>\n" );
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document.write( "21\r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 23 <BR>\n" );
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document.write( "A researcher conducts a one-tailed independent samples t test on 20 subjects (10 subjects in each group) and finds that t = 2.32665.About what is the actual Type 1 error in the study? <BR>\n" );
document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "Between 0 and .075\r<BR>\n" );
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document.write( " <BR>\n" );
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document.write( "Between 1 and 2.5\r<BR>\n" );
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document.write( "Between 2.5 and 3.5\r<BR>\n" );
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document.write( "Between 3.5 and 4.5 \r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 24 <BR>\n" );
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document.write( "<BR>\n" );
document.write( "\n" );
document.write( "A researcher conducts a one-tailed independent samples t test on 20 subjects (10 subjects in each group) and finds that t = 2.32665.How confident can the research be that the results are true and not due to mere sampling error? <BR>\n" );
document.write( " <BR>\n" );
document.write( "    <BR>\n" );
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document.write( "50\r<BR>\n" );
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document.write( "   <BR>\n" );
document.write( "79\r<BR>\n" );
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document.write( "100\r<BR>\n" );
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document.write( " .\r<BR>\n" );
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document.write( "4 points   <BR>\n" );
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document.write( "Question 25 <BR>\n" );
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document.write( "\n" );
document.write( " <BR>\n" );
document.write( "A researcher conducts a one-tailed independent samples t test on 20 subjects (10 subjects in each group) and finds that t = 2.32665. Report the results as they would appear in an academic journal.<BR>\n" );
document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "t(18) = 7.32568, p = .50\r<BR>\n" );
document.write( "\n" );
document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "t(18) = 7.32568, p = .02\r<BR>\n" );
document.write( "\n" );
document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "t(18) = 2.32665, p = .50\r<BR>\n" );
document.write( "\n" );
document.write( " <BR>\n" );
document.write( "   <BR>\n" );
document.write( "t(18) = 2.32665, p = .02 \r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #587778 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=587778\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Can you narrow down to 4 which problems you'd like solved? <BR>\n" );
document.write( "You're more likely to get help that way.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );