document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=487044>Question 487044</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help I have been working on this problem for the last hour...I am so confused...Thank you for your time its greatly appreciated\r<BR>\n" );
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document.write( "A set of data is normally distributed with a mean of 100 and standard deviation of 15. SHOW ALL WORK\r<BR>\n" );
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document.write( "What would be the standard score for a score of 115?<BR>\n" );
document.write( "What percentage of scores is between 100 and 115?<BR>\n" );
document.write( "What would be the percentile rank for a score of 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 #332924 by </B><A HREF=/tutors/aboutme.mpl?userid=John10><B>John10(297)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=John10><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/cgi-bin/show-face.mpl?user=John10><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=332924\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the formula z = (X - M)/s.d<BR>\n" );
document.write( "a) z = (115 - 100)/15 = 15/15 = 1<BR>\n" );
document.write( "b) P ( 100 < X < 115) = P((100 - 100)/15 <z < (115 -100)/15) = P(0 <z < 1) = 0.341 or 34.1%<BR>\n" );
document.write( "c) Draw a picture and use 68%-95%-99.5% rule to find about 34% of the students who score 115.<BR>\n" );
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