document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=229260>Question 229260</A>: <I><SPAN STYLE=\"word-break: break-all;\"> hi i am having trouble to resolve this problem:<BR>\n" );
document.write( "in a certain distrubution of numbers, the mean is 50 and the standard deviation is 6.What can you say about the percentage of numbers that lie between 38 and 62?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #170037 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=170037\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> in a certain distribution of numbers, the mean is 50 and the standard deviation is 6.<BR>\n" );
document.write( "What can you say about the percentage of numbers that lie between 38 and 62?<BR>\n" );
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document.write( "Find the z-value of 38 and of 63<BR>\n" );
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document.write( "z(38) = (38-50)/6 = -12/6 = -2<BR>\n" );
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document.write( "z(62) = (62-50)/6 = 12/6 = 2<BR>\n" );
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document.write( "P(38 < x < 62) = P(-2 < z < 2) = 0.9545<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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