document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=632207>Question 632207</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Each month, an American household generates an average of 28 pounds of newspaper<BR>\n" );
document.write( "for garbage or recyling with a standard deviation of 2 pounds. Assuming a normal<BR>\n" );
document.write( "distribution, what percentage of American households generate between 27.8 and 31.3 pounds per month?<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 #398114 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=398114\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Each month, an American household generates an average of 28 pounds of newspaper<BR>\n" );
document.write( "for garbage or recyling with a standard deviation of 2 pounds. Assuming a normal<BR>\n" );
document.write( "distribution, what percentage of American households generate between 27.8 and 31.3 pounds per month?<BR>\n" );
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document.write( "z(27.8) = (27.8-28)/2 = -0.1<BR>\n" );
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document.write( "z(31.3) = (31.3-28)/2 = 3.3/2 = 1.65<BR>\n" );
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document.write( "P(27.8<= x <=31.3) = P(-0.1<= z <=1.65) = 0.4904<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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