document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=70054>Question 70054</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Replacement times for new Ford Taurus GL automobiles are normally distributed with a mean of 7.1 years and a standard deviation of 1.4 years. Find the probability that seven randomly selected Taurus GL automobiles will have a mean replacement time greater than 7.0 years. \r<BR>\n" );
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document.write( "get z=.071  a=4721 and .5279 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #49924 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=49924\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Replacement times for new Ford Taurus GL automobiles are normally distributed with a mean of 7.1 years and a standard deviation of 1.4 years. Find the probability that seven randomly selected Taurus GL automobiles will have a mean replacement time greater than 7.0 years. \r<BR>\n" );
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document.write( "get z=.071  a=4721 and .5279<BR>\n" );
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document.write( "z(7)=[7-7.1]/(1.4/sqrt7) = -0.18898<BR>\n" );
document.write( "Prob(X>7)= Prob(z>-0.18898)=0.5749 or 57.49%<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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