document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=61325>Question 61325</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321331834/algebrahomeworkh>Elementary Statistics</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Please help me with this one. In previous test, baseballs were dropped 24ft. onto a concrete surface, and they bounced an average of 92.84 in. In a test of a sample of 40 new balls, the bounce heights had a mean of 92.67 in. and a standard deviation of 1.79  in(based on data from Brookhaven National Laboratory). Use a 0.05 significance level to determine whether there is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.84 in. Does it appear that the new baseball are different?\r<BR>\n" );
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document.write( "My solution:<BR>\n" );
document.write( "t = 92.67-92.84/1.79/sq.root of 40 = -0.17/.2830238 = -.6006\r<BR>\n" );
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document.write( "I think claim is p not equal to .9284, so null hyphotesis is p = .9284<BR>\n" );
document.write( "alternative hyphotesis p not equal to .9284\r<BR>\n" );
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document.write( "This is a two-tailed test and Critical value is +- 1.96 <BR>\n" );
document.write( "Where do I base my answer ? Do I need P value for this problem?<BR>\n" );
document.write( "Thank you for all your help.<BR>\n" );
document.write( "Jo </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #42424 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=42424\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In previous test, baseballs were dropped 24ft. onto a concrete surface, and they bounced an average of 92.84 in. In a test of a sample of 40 new balls, the bounce heights had a mean of 92.67 in. and a standard deviation of 1.79  in(based on data from Brookhaven National Laboratory). Use a 0.05 significance level to determine whether there is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.84 in. Does it appear that the new baseball are different?\r<BR>\n" );
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document.write( "My solution:<BR>\n" );
document.write( "t = 92.67-92.84/1.79/sq.root of 40 = -0.17/.2830238 = -0.6006\r<BR>\n" );
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document.write( "I think claim is p not equal to 92.84, so null hyphotesis is p = 92.84<BR>\n" );
document.write( "alternative hyphotesis p not equal to 92.84\r<BR>\n" );
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document.write( "This is a two-tailed test and Critical value is +- 1.96<BR>\n" );
document.write( "Comment:<BR>\n" );
document.write( "Where do I base my answer ?<BR>\n" );
document.write( "Your t-value of -0.6006 is not in the critical region below<BR>\n" );
document.write( "z=-1.96 so you \"Fail to reject Ho\" which was mu=92.84 <BR>\n" );
document.write( "Do I need P value for this problem?<BR>\n" );
document.write( "Not really.  But the p-value is 0.55 which is greater <BR>\n" );
document.write( "than alpha= 0.05 and supports the conclusion of \"Fail to reject Ho\".<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "Thank you for all your help.<BR>\n" );
document.write( "Jo </SPAN>\n" );
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