document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=971923>Question 971923</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A survey found that people keep their televisions an average of 5.2 years. The standard deviation is 0.8 year. Assume the random variable is normally distributed. If you buy a TV for your dorm room and keep it for 3.8 years of school then sell it, what percentile does that put you in? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #594356 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=594356\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(sample -µ)/sd\r<BR>\n" );
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document.write( "z=(3.8-5.2)/0.8 ; This =  -1.4/0.8 = - 1.571\r<BR>\n" );
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document.write( "I want z value to the left of -1.571  <BR>\n" );
document.write( "That is 0.058 or the 6th percentile. </SPAN>\n" );
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