document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1091773>Question 1091773</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A sample of 45 hairs are cut from a person's head. The diameter of each of the 45 hairs is measured in micrometers (&#956;m, or in other words 10^-6m) with a mean of 38&#956;m and a sample standard deviation of 2.306&#956;\r<BR>\n" );
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document.write( "If the diameters of hair are normally distributed, estimate the percentage of all hairs on this person's head that will have a diameter greater than 40.5&#956;m. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #706313 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=706313\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> t=(40.5-38)/2.306<BR>\n" );
document.write( "t=1.08<BR>\n" );
document.write( "want the per cent of hairs greater than 40.5 given a t-distribution with df=44.<BR>\n" );
document.write( "It would be 0.1430<BR>\n" );
document.write( "(it would be 0.1491 with the z-distribution.)<BR>\n" );
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