document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=612153>Question 612153</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a sample of 85 golfers showed that their average score on a particular golfers course was 91.31 with a standard deviation of 5.37. show all work.\r<BR>\n" );
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document.write( "A) find the 99% confidence interval of the mean score for all 85 golfers.\r<BR>\n" );
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document.write( "B) find the 99% confidence interval of the mean score for all golfers if this is a sample of 120 golfers instead of a sample of 85.\r<BR>\n" );
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document.write( "C) which onfidence interval is smaller and why? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #385350 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=385350\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a sample of 85 golfers showed that their average score on a particular golfers course was 91.31 with a standard deviation of 5.37. show all work.\r<BR>\n" );
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document.write( "A) find the 99% confidence interval of the mean score for all 85 golfers.<BR>\n" );
document.write( "(89.775,92.845)<BR>\n" );
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document.write( "B) find the 99% confidence interval of the mean score for all golfers if this is a sample of 120 golfers instead of a sample of 85.<BR>\n" );
document.write( "(90.027,92.593)<BR>\n" );
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document.write( "C) which onfidence interval is smaller and why?<BR>\n" );
document.write( "Interval B is slightly smaller.<BR>\n" );
document.write( "ME = t*s/sqrt(n)<BR>\n" );
document.write( "Notice that ME and sqrt(n) are indirectly related.<BR>\n" );
document.write( "As n gets larger, ME gets smaller.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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