document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=324334>Question 324334</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the average life of a brand of automobile tires is 30,000 miles with a standard deviation of 2,000 miles. If a Tire is randomly selected and tested find the probability that it will have a life span between 25,000 and 28,000 miles. Assome the variable is normally distributed </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #232129 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=232129\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the z scores for 25000 and 28000.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z1=%28x-mu%29%2Fsigma=%2825000-30000%29%2F2000=-2.5 ALIGN=MIDDLE  ALT=\"z1=%28x-mu%29%2Fsigma=%2825000-30000%29%2F2000=-2.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z2=%28x-mu%29%2Fsigma=%2828000-30000%29%2F2000=-1.0 ALIGN=MIDDLE  ALT=\"z2=%28x-mu%29%2Fsigma=%2828000-30000%29%2F2000=-1.0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Find the corresponding P(z).<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28z1%29=0.00621 ALIGN=MIDDLE  ALT=\"P%28z1%29=0.00621\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28z2%29=0.15866 ALIGN=MIDDLE  ALT=\"P%28z2%29=0.15866\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Subtract the probabilities to find the probability for the range,<BR>\n" );
document.write( "(<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25000%3C=x%3C=28000 ALIGN=MIDDLE  ALT=\"25000%3C=x%3C=28000\"   DISABLED_style= \"max-width:90%; height:auto;\" >)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28x%29=0.15866-0.00621=0.1524 ALIGN=MIDDLE  ALT=\"P%28x%29=0.15866-0.00621=0.1524\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );