document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=315736>Question 315736</A>: <I><SPAN STYLE=\"word-break: break-all;\"> as an aid to the estabishment of personnel requirements, the director of a hospital wishes to estimate the mean numbe of people who were admitted to the emergency room during a 24-hour period.  The director radmomly selects 64 different 24-hour periods and determines the number of admission fo each.  For this sample, the sample mean=9.8 and the sample variance=25.  if the director wishes to  estimate the mean number of admissions per 24-hour period to within 1 admission with 99% reliability, what size sample should she choose?\r<BR>\n" );
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document.write( "A. n=482<BR>\n" );
document.write( "B. n=166<BR>\n" );
document.write( "C. n=154<BR>\n" );
document.write( "D. n=123\r<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 #225891 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=225891\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For this sample, the sample mean=9.8 and the sample variance=25. if the director wishes to estimate the mean number of admissions per 24-hour period to within 1 admission with 99% reliability, what size sample should she choose?<BR>\n" );
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document.write( "n = [z*s/E]^2<BR>\n" );
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document.write( "n = [2.5758*sqrt(25)/1]^2 = 166 after rounding up.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "A. n=482<BR>\n" );
document.write( "B. n=166<BR>\n" );
document.write( "C. n=154<BR>\n" );
document.write( "D. n=123 <BR>\n" );
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