document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1200736>Question 1200736</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 16% of all Americans live in poverty. If 47 Americans are randomly selected, find the probability that\r<BR>\n" );
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document.write( "a.  Exactly 7 of them live in poverty. _______\r<BR>\n" );
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document.write( "b.  At most 6 of them live in poverty. ________\r<BR>\n" );
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document.write( "c.  At least 8 of them live in poverty. _________\r<BR>\n" );
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document.write( "d.  Between 5 and 10 (including 5 and 10) of them live in poverty. ________<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 #835005 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=835005\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a. This is 47C7*0.16^7*0.84^40=0.1580<BR>\n" );
document.write( "b. this is 0.3572 using binomial cdf (47,0.16,6)<BR>\n" );
document.write( "check for 0 it is 0.84^47=0.0003<BR>\n" );
document.write( "for 1 it is 47*0.16*0.84^46=0.0025<BR>\n" );
document.write( "for 2 it is 47C2*0.16^2*0.84^45=0.0108<BR>\n" );
document.write( "for 3 it is 0.0309<BR>\n" );
document.write( "for 4 it is 0.0648<BR>\n" );
document.write( "for 5 it is 0.1062<BR>\n" );
document.write( "for 6 it is 0.1416. They add to 0.3571 (rounding is the 0.0001 difference; use 0.3572 as the answer.<BR>\n" );
document.write( "c. for 7 it is 0.1580, so adding that to 0.3572 is 0.5152. That is at most 7, so at least 8 is the complement or 0.4848.<BR>\n" );
document.write( "d. for at most 4, the answer is 0.1094.<BR>\n" );
document.write( "for at most 10, the answer is 0.8797<BR>\n" );
document.write( "Subtracting the second from the first and the answer is 0.7703, which its between 5 and 10. </SPAN>\n" );
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