document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1207859>Question 1207859</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1) A major department store chain is interested in estimating the average amount its credit card customers spent on their first visit to the chain's new store in the mall. Fifteen credit card accounts were randomly sampled and analyzed with the following results: x = $50.50 and s2 = 400. A 95% confidence interval for the average amount the credit card customers spent on their first visit to the chain's new store in the mall is:<BR>\n" );
document.write( "a. $50.50 ± $10.12<BR>\n" );
document.write( "b. $50.50 ± $11.79<BR>\n" );
document.write( "c. $50.50 ± $9.09<BR>\n" );
document.write( "d. $50.50 ± $11.08<BR>\n" );
document.write( "e. $50.50 ± $11.00\r<BR>\n" );
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document.write( "2) Which of the following is not true about the Student's t distribution?<BR>\n" );
document.write( "a. It has more area in the tails and less in the center than does the normal distribution.<BR>\n" );
document.write( "b. It is used to construct confidence intervals for the population mean when the population standard deviation is known.<BR>\n" );
document.write( "c. It is bell shaped and symmetrical.<BR>\n" );
document.write( "d. As the number of degrees of freedom increases, the t distribution approaches the normal distribution.<BR>\n" );
document.write( "e. both (a) and (b)\r<BR>\n" );
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document.write( "3) Researchers determined that 60 Kleenex tissues is the average number of tissues used during a cold. Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: x = 52 and s = 22. Suppose the alternative we wanted to test was H1: 𝜇 < 60. The correct rejection region for 𝛼 = 0.05 is<BR>\n" );
document.write( "a. reject H0 if t < -1.6604<BR>\n" );
document.write( "b. reject H0 if t > 1.9842 or Z < -1.9842<BR>\n" );
document.write( "c. reject H0 if t > -1.9842<BR>\n" );
document.write( "d. reject H0 if t > 1.6604<BR>\n" );
document.write( "e. reject H0 if t < -1.9842<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #845997 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52772)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=845997\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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