document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=933331>Question 933331</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A random variable x has a mean of 100 and a standard deviation of 10 Find P (85&#8804; x &#8804; 115 ) <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 #566750 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=566750\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A random variable x has a mean of 100 and a standard deviation of 10 Find P (85&#8804; x &#8804; 115 ) <BR>\n" );
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document.write( "z(85) = (85-100)/10 = -15/10 = -3/2<BR>\n" );
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document.write( "z(115) = (115-100)/10 = 15/10 = 3/2<BR>\n" );
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document.write( "P(85<= x <=115) = P(-3/2 <= z <= 3/2) = normalcdf(-1.5,1.5) = 0.8664<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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