document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=422763>Question 422763</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a 95% confidence interval for the mean of a population is given as (3.0, 5.0). If a sample size of 100 was used to obtain this interval what was the standard deviation used in the calculation? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #295053 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=295053\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a 95% confidence interval for the mean of a population is given as (3.0, 5.0). If a sample size of 100 was used to obtain this interval what was the standard deviation used in the calculation?<BR>\n" );
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document.write( "2*ME = 5-3 = 2<BR>\n" );
document.write( "ME = 1<BR>\n" );
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document.write( "So zs/sqrt(n) = 1<BR>\n" );
document.write( "1.96s/sqrt(100) = 0.196s = 1<BR>\n" );
document.write( "s = 5.1020<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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