document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=742117>Question 742117</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The service time of the first service of a BMW car is found to be normally distributed with a mean of 70 minutes and a standard deviation of 9 minutes.\r<BR>\n" );
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document.write( "What is the minimum service time if the BMW dealer is willing to give a free service to the 3% of customers who waited the longest for their cars to be serviced? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #452389 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=452389\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The service time of the first service of a BMW car is found to be normally distributed with a mean of 70 minutes and a standard deviation of 9 minutes. <BR>\n" );
document.write( "What is the minimum service time if the BMW dealer is willing to give a free service to the 3% of customers who waited the longest for their cars to be serviced?<BR>\n" );
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document.write( "Find the z-value with a right tail of 3%.<BR>\n" );
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document.write( "invNorm(0.97) = 1.8808<BR>\n" );
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document.write( "Find the corresponding time value.<BR>\n" );
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document.write( "x = z*s + u<BR>\n" );
document.write( "x = 1.8808*9+70<BR>\n" );
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document.write( "x = 86.93 minutes<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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