document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1081964>Question 1081964</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mean weight of insects for laboratory experiments is 13.2g, with the standard deviation of 0.8g. What is the probability of randomly selecting insects with weight of: a. 14g? b. 13.1g to 13.6g? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #696077 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=696077\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z=(x-mean)/sd<BR>\n" );
document.write( "z for the first is 0.  This is a continuous function, and the probability of selecting an exact value is 0. A range is another matter. <BR>\n" );
document.write( "the second is (13.1-13.2)/0.8=-0.125<BR>\n" );
document.write( "and (13.6-13.2)/0.8=0.5<BR>\n" );
document.write( "it is z between -0.125 and +0.5, and that probability is 0.2412. </SPAN>\n" );
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