document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=286784>Question 286784</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a sample of 500 college students fifty percent of all college students attend schools within 50 miles of their homes. The probability that the population proportion will be between 0.45 and 0.55 is? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #207953 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=207953\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a sample of 500 college students fifty percent of all college students attend schools within 50 miles of their homes. The probability that the population proportion will be between 0.45 and 0.55 is?<BR>\n" );
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document.write( "z(0.45) = (0.45-0.5)/sqrt(0.5*0.5/500) = -2.2361<BR>\n" );
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document.write( "z(0.55) = 0.55-0.5)/sqrt(0.5*0.5/500) = 2.2361<BR>\n" );
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document.write( "P(0.45 < p < 0.55) = P(-2.2361 < z < 2.2361) = 0.9747<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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