document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=482907>Question 482907</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Please Help me: Household income does not tend to follow a normal distribution in a particular state, yet average income is approximately $45,000/year in this state, with a standard deviation of about $9000.  Approximately what percentage of household incomes in this state is between $27,000 to $63,000/year?  Show all work as to how this is obtained. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #330489 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=330489\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Household income does not tend to follow a normal distribution in a particular state, yet average income is approximately $45,000/year in this state, with a standard deviation of about $9000. Approximately what percentage of household incomes in this state is between $27,000 to $63,000/year? Show all work as to how this is obtained.<BR>\n" );
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document.write( "(27000-45000)/9000 = -2<BR>\n" );
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document.write( "(63000-45000)/9000 = 2<BR>\n" );
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document.write( "Using Chebychev's approximation, (1-(1/2)^2)% = 0.75% of the<BR>\n" );
document.write( "households will fall in that range.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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