document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=433400>Question 433400</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Annual starting salaries for college graduates with business administration degrees are believed to have a standard deviation of approximately $2000.  Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. How large a sample should be taken if the desired margin of error is\r<BR>\n" );
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document.write( "	(a.)   $500   ___________<BR>\n" );
document.write( "	(b.)   $200   ___________<BR>\n" );
document.write( "	(c.)   $100   ___________<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 #300430 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=300430\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Annual starting salaries for college graduates with business administration degrees are believed to have a standard deviation of approximately $2000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. How large a sample should be taken if the desired margin of error is <BR>\n" );
document.write( "(a.) $500 ___________<BR>\n" );
document.write( "(b.) $200 ___________<BR>\n" );
document.write( "(c.) $100 ___________<BR>\n" );
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document.write( "n = [zs/E]^2<BR>\n" );
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document.write( "a) n = [1.96*2000/500]^2 = 7.84^2 = 62 when rounded up<BR>\n" );
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document.write( "b) n = [1.96*2000/200]^2 = 19.6^2 = 385 when rounded up <BR>\n" );
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document.write( "c) n = [1.96*2000/100]^2 = 39.2^2 = 1537 when rounded up\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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