document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1046798>Question 1046798</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1. Say I take a random sample and all I know is the mean and standard deviation for that sample.<BR>\n" );
document.write( "How would I estimate the population mean? \r<BR>\n" );
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document.write( "2. How do I know if a confidence interval is appropriate to use?  Does a scenario have to meet a certain criteria? <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 #662245 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=662245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "An example that may help to clarify Your questions<BR>\n" );
document.write( "A sample of 89 golfers showed that their average score on a particular golf course was 90.98 <BR>\n" );
document.write( "with a standard deviation of 6.47. <BR>\n" );
document.write( "and state the final answer to at least two decimal places.):<BR>\n" );
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document.write( "x=bar = 90.98 <BR>\n" );
document.write( "(A) Find the 98% confidence interval of the mean score for all 89 golfers.<BR>\n" );
document.write( "ME = 2.3263[6.47/sqrt(89)] = 1.5955<BR>\n" );
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document.write( "CI: 90.98-1.5955 < u < 90.98+1.5955<BR>\n" );
document.write( "CI: 89.3845 < u < 92.5755<BR>\n" );
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