document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1076856>Question 1076856</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mean weight of trucks traveling on a particular section of I-475 is not known. A state highway inspector needs an estimate of the mean. He selects a random sample of 49 trucks passing the weighing station and finds the mean is 15.8 tons, with a standard deviation of the sample of 4.2 tons. What is the probability that a truck will weigh less than 14.3 tons? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #691517 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=691517\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z<(14.3-15.8)/4.2. This is (x-mean)/sd<BR>\n" );
document.write( "z< -1.5/4,2<BR>\n" );
document.write( "z< -.36<BR>\n" );
document.write( "probability is 0.3594 for one truck to weigh fewer than 14.3 tons. </SPAN>\n" );
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