document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=494567>Question 494567</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Very confused on problem...I would greatly appreciate your help and time...thanks a bunch\r<BR>\n" );
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document.write( "A set of 50 data values has a mean of 28 and a variance of 4. <BR>\n" );
document.write( "I.  Find the standard score (z) for a data value = 31.<BR>\n" );
document.write( "II. Find the probability of a data value > 31.<BR>\n" );
document.write( "III. Find the probability of a data value < 31.<BR>\n" );
document.write( "Show all work.<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 #335692 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=335692\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A set of 50 data values has a mean of 28 and a variance of 4. <BR>\n" );
document.write( "I. Find the standard score (z) for a data value = 31.<BR>\n" );
document.write( "z(31) = (31-28)/4 = 3/4<BR>\n" );
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document.write( "II. Find the probability of a data value > 31.<BR>\n" );
document.write( "z(31) = 3/4<BR>\n" );
document.write( "P(x > 31) = P(z > 3/4) = 0.2266<BR>\n" );
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document.write( "III. Find the probability of a data value < 31.<BR>\n" );
document.write( "P(x < 31) = 1 - 0.2266 = 0.7734<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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