document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=421146>Question 421146</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A set of 50 data values has a mean of 39 and a variance of 9.<BR>\n" );
document.write( "I. Find the standard score (z) for a data value = 43.<BR>\n" );
document.write( "II. Find the probability of a data value < 43.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #294159 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=294159\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A set of 50 data values has a mean of 39 and a variance of 9.<BR>\n" );
document.write( "Note: standard deviation = sqrt(9) = 3<BR>\n" );
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document.write( "I. Find the standard score (z) for a data value = 43.<BR>\n" );
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document.write( "z(43) = (43-39)/3 = 4/3<BR>\n" );
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document.write( "II. Find the probability of a data value < 43.<BR>\n" );
document.write( "P(x < 43) = P(z < 4/3) = normalcdf(-100,43) = 0.9088<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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