document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=581578>Question 581578</A>: <I><SPAN STYLE=\"word-break: break-all;\"> IQ as measured by the Wechsler Adult Intelligence Test, is scaled so that the mean in the population is 100 with a standard deviation of 15. What is the probability of randomly sampling a member out of this population who has an IQ of 120 or greater?\r<BR>\n" );
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document.write( "What is the probability of randomly sampling a set of 5 people out of this population who have a mean IQ of 120 or greater.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #371739 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=371739\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> IQ as measured by the Wechsler Adult Intelligence Test, is scaled so that the mean in the population is 100 with a standard deviation of 15. What is the probability of randomly sampling a member out of this population who has an IQ of 120 or greater? <BR>\n" );
document.write( "What is the probability of randomly sampling a set of 5 people out of this population who have a mean IQ of 120 or greater. <BR>\n" );
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document.write( "z(120) = (120-100)/15 = 20/15 = 4/3<BR>\n" );
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document.write( "P(x > 120) = P(z > 4/3) = normalcdf(4/3,100) = 0.0912<BR>\n" );
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document.write( "Chers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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