document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=746434>Question 746434</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello I have trouble with these questions,\r<BR>\n" );
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document.write( "1) Identify the sample space of the probability experiment and determine the number of outcomes in the sample space,<BR>\n" );
document.write( " Guessing the last digit in the price of a TV.<BR>\n" );
document.write( "The sample space is:<BR>\n" );
document.write( "There are .... # outcomes in the sample space \r<BR>\n" );
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document.write( "2) Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. z= .54\r<BR>\n" );
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document.write( "3) Find the p value for a left tailed hypothesis test with a test statistic of z= -1.23. Decide weather to reject Ho if the level of significance is alpha =.10.\r<BR>\n" );
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document.write( "4) Is achieving a basic skill level  related to the location of the school? The results of a random sample of students by the location of school and the number of students achieving basic skill levels in three subjects is shown in the contingency table. At a alpha = .01, test the hypothesis that the variables are independent. \r<BR>\n" );
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document.write( "                   subject <BR>\n" );
document.write( "location   reading  math  science <BR>\n" );
document.write( "urban       44       50      30<BR>\n" );
document.write( "suburban    66       68      54\r<BR>\n" );
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document.write( "A) Ho:Skill level in a subject is independent or dependent? of location <BR>\n" );
document.write( "   Ha: Skill level in a subject is independent or dependent ? of Location\r<BR>\n" );
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document.write( "The alternative or null hypothesis ? is the claim\r<BR>\n" );
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document.write( "B) Determine the degrees of freedom, critical value, and identify the rejection region.\r<BR>\n" );
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document.write( "D.F. = \r<BR>\n" );
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document.write( "Critical Value\r<BR>\n" );
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document.write( "Xo2= \r<BR>\n" );
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document.write( "What is the rejection region?\r<BR>\n" );
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document.write( "Calculate the text statistic? What is is X2\r<BR>\n" );
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document.write( "C)Decide to reject or fail to reject the null hypothesis. Then interpret the decision in the context of the original claim. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #454282 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=454282\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1) Identify the sample space of the probability experiment and determine the number of outcomes in the sample space,<BR>\n" );
document.write( "Guessing the last digit in the price of a TV.<BR>\n" );
document.write( "The sample space is: The whole numbers 0 thru 9<BR>\n" );
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document.write( "There are as many single digits as there are TV prices in the sample space <BR>\n" );
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document.write( "2) Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. z= .54 <BR>\n" );
document.write( "Note: You need to describe the shaded area.<BR>\n" );
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document.write( "3) Find the p value for a left tailed hypothesis test with a test statistic of z= -1.23.<BR>\n" );
document.write( "Ans P(z < -1.23) = 0.1093<BR>\n" );
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document.write( "Decide weather to reject Ho if the level of significance is alpha =.10.<BR>\n" );
document.write( "Ans: Since the p-value is greater than 10%, fail to reject Ho.<BR>\n" );
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document.write( "4) Is achieving a basic skill level related to the location of the school? <BR>\n" );
document.write( "The results of a random sample of students by the location of school and the number of students achieving basic skill levels in three subjects is shown in the contingency table. At a alpha = .01, test the hypothesis that the variables are independent. <BR>\n" );
document.write( "subject <BR>\n" );
document.write( "location reading math science <BR>\n" );
document.write( "urban::::: 44::::50 ::::::30<BR>\n" );
document.write( "suburban:: 66::: 68 ::::::54<BR>\n" );
document.write( "Ho: row and column factors are independent<BR>\n" );
document.write( "Ha: they are not independent<BR>\n" );
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document.write( "I ran a Chi-Sq Test on the 2 by 2 data set and got the following results/<BR>\n" );
document.write( "test statistic: Chi-Sq = 1234.67<BR>\n" );
document.write( "p-value: 0 to 8 decimal places<BR>\n" );
document.write( "df = 2\r<BR>\n" );
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document.write( "Conclusion: Since the p-value is less than 1% reject Ho.<BR>\n" );
document.write( "The row and column factors are not independent.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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