document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1077935>Question 1077935</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 10.3.31 <BR>\n" );
document.write( "A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the&#8203; exam, scores are normally distributed with <BR>\n" );
document.write( "mu equals &#956;=52. The teacher obtains a random sample of 1800 &#8203;students, puts them through the review&#8203; class, and finds that the mean math score of the <BR>\n" );
document.write( "1800 students is 52 with a standard deviation of 117. \r<BR>\n" );
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document.write( "a) Test the hypothesis at the &#945;=0.10 level of significance. Is a mean math score of 529 statistically significantly higher than <BR>\n" );
document.write( "522&#8203;? Conduct a hypothesis test using the&#8203; P-value approach.<BR>\n" );
document.write( "     what is the test statistic? t0=????<BR>\n" );
document.write( "     what is the p value? P=???\r<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 #692421 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=692421\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Please check the values used.  Mean of 52 is Ho, but mean of the score of the math students is 52 with a sd of 117 seems odd.  First, if the sample mean is 52, the null hypothesis can't be rejected, and second, a sd of 117 would not fit with typical ranges of 0-100 math scores.  Third, a mean math score of 529 and 522 is not clear. </SPAN>\n" );
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