document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=522150>Question 522150</A>: <I><SPAN STYLE=\"word-break: break-all;\"> random sample of 200 measurements give a mean of 50 and standard deviation of 9. at 5% level of significance, test the hypothesis that the population mean is 52. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346739 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=346739\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> random sample of 200 measurements give a mean of 50 and standard deviation of 9. at 5% level of significance, test the hypothesis that the population mean is 52.<BR>\n" );
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document.write( "Ho: u = 52 (claim)<BR>\n" );
document.write( "Ha: u is not equal to 52<BR>\n" );
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document.write( "sample mean = 50<BR>\n" );
document.write( "z(50) = (50-52)/[9/sqrt(200)] = -3.1427<BR>\n" );
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document.write( "p-value = P(z<-3.1427) = 0.00083705<BR>\n" );
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document.write( "Since the p-value is less than 5%, reject Ho.<BR>\n" );
document.write( "The test results do not support the claim.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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