document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1139996>Question 1139996</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I read the chapter but dont understand how to solve this problem\r<BR>\n" );
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document.write( "You wish to test the following claim (Ha) at a significance level of α=0.10.<BR>\n" );
document.write( "      Ho:μ=75.4 <BR>\n" );
document.write( "      Ha:μ≠75.4<BR>\n" );
document.write( "You believe the population is normally distributed and you know the standard deviation is σ=8.4. You obtain a sample mean of M=74.8 for a sample of size n=46.<BR>\n" );
document.write( "What is the p-value for this sample? (Report answer accurate to four decimal places.) <BR>\n" );
document.write( "p-value = </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #760830 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=760830\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(x-mean)/sd/sqrt(n)<BR>\n" );
document.write( "=-0.6*sqrt(46)/8.4, inverting the denominator when dividing puts sqrt(n) in numerator<BR>\n" );
document.write( "=-0.48<BR>\n" );
document.write( "p-value for z=-0.48 is 0.3140 one way or 0.6280 two way (ANSWER)\r<BR>\n" );
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document.write( "Note: to use four decimal accuracy requires the unusual step of using z to four decimal places.  Do on calculator and round only at end. The p-value for all practical purposes is large and 0.62, 0.63 or even 0.64 might be reported and be sufficient.<BR>\n" );
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