document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=660465>Question 660465</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Assume that the average annual salary for a worker in the United States is $38,000 and that the annual salaries for Americans are normally distributed with a standard deviation equal to $7,000. Find the following:<BR>\n" );
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document.write( "(A)  What percentage of Americans earn below $25,000? <BR>\n" );
document.write( "(B)  What percentage of Americans earn above $46,000? <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 #411214 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=411214\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Assume that the average annual salary for a worker in the United States is $38,000 and that the annual salaries for Americans are normally distributed with a standard deviation equal to $7,000. Find the following:\r<BR>\n" );
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document.write( "(A) What percentage of Americans earn below $25,000?<BR>\n" );
document.write( "z(25000) = (25000-38000)/7000 = -1.857<BR>\n" );
document.write( "P(x < 25000) = P(z < -1.85) = normalcdf(-100,-1.85) = 0.0322<BR>\n" );
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document.write( "(B) What percentage of Americans earn above $46,000?<BR>\n" );
document.write( "Follow the same procedure for this one.<BR>\n" );
document.write( "Ans: 0.1265<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. \r<BR>\n" );
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