document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1189038>Question 1189038</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 chevrolet cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. if 40 mechanics are randomly selected, ?nd the probability that their mean rebuild time exceeds 8.7 hours </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #820290 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=820290\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is z>(8.7-8.4)/1.8/sqrt(40)<BR>\n" );
document.write( "> 0.3*sqrt(40)/1.8<BR>\n" );
document.write( ">1.054<BR>\n" );
document.write( "that probability is 0.1459<BR>\n" );
document.write( " </SPAN>\n" );
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