document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1043428>Question 1043428</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A doctor wants to estimate the HDL cholesterol of all&#8203; 20- to&#8203; 29-year-old females. How many subjects are needed to estimate the HDL cholesterol within 4 points with 99% confidence assuming &#963;=12.7? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size&#8203; required?<BR>\n" );
document.write( "A&#8203; 99% confidence level requires how many subjects? Round to the nearest whole number<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 #658598 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=658598\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A doctor wants to estimate the HDL cholesterol of all&#8203; 20- to&#8203; 29-year-old females. How many subjects are needed to estimate the HDL cholesterol within 4 points with 99% confidence assuming &#963;=12.7?<BR>\n" );
document.write( "n = [2.5758*12.7/4]^2<BR>\n" );
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document.write( " Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size&#8203; required?<BR>\n" );
document.write( "Sample size will be smaller to achieve that smaller level of confidence.<BR>\n" );
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document.write( "A&#8203; 99% confidence level requires how many subjects? Round to the nearest whole number.<BR>\n" );
document.write( "Ans:: 67 when rounded up<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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