document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1171528>Question 1171528</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the Empirical Rule to answer each question.\r<BR>\n" );
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document.write( "During 1 week an overnight delivery company found that the weights of its parcels were normally distributed, with a mean of 16 ounces and a standard deviation of 4 ounces.<BR>\n" );
document.write( "(a) What percent of the parcels weighed between 8 ounces and 20 ounces? (Round your answer to one decimal place.)<BR>\n" );
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document.write( "(b) What percent of the parcels weighed more than 28 ounces? (Round your answer to two decimal places.)<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #796515 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=796515\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a This is between -2 SD and +1SD<BR>\n" );
document.write( "47.5% of the curve left of the mean from -2SD to 0.<BR>\n" );
document.write( "34% of the curve to the right of the mean from the mean to +1SD<BR>\n" );
document.write( "81.5%.<BR>\n" );
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document.write( "more than 28 ounces is more than 3 SD, and the probability is 0.00135 or 0.14% to two decimal places. </SPAN>\n" );
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