document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=402559>Question 402559</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A set of 50 data values has a mean of 20 and a variance of 36.<BR>\n" );
document.write( "I.  Find the standard score (z) for a data value = 18.<BR>\n" );
document.write( "II. Find the probability of a data value < 18. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #284727 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=284727\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A set of 50 data values has a mean of 20 and a variance of 36.<BR>\n" );
document.write( "If variance = 36, std = 6<BR>\n" );
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document.write( "I. Find the standard score (z) for a data value = 18.<BR>\n" );
document.write( "z(18) = (18-20)/6 = -2/6 = -1/3<BR>\n" );
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document.write( "II. Find the probability of a data value < 18.<BR>\n" );
document.write( "P(x < 18) = P(z < -1/3) = 0.3694<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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