document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=925597>Question 925597</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The results of a survey revealed that 30% of the people surveyed said that they would buy home electronic equipment at post-holiday sales. If 20 people are selected, find the probability that 8 OR 9 will purchase home electronic equipment at the post-holiday sales. (Round to 4 decimal places </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #561643 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=561643\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p(buy electronics)= .30,  n = 20<BR>\n" );
document.write( " Using a TI calculator 0r similarly a Casio fx-115 ES plus<BR>\n" );
document.write( "P(x = 8 0R x = 9) = binompdf(20, .30, 8) + binompdf(20, .30 9) = .1144 + .0654 = .1798  0r 17.98%<BR>\n" );
document.write( "...By Hand<BR>\n" );
document.write( "P(x = 8 0R x = 9) = 20C8(.3)^8(.7)^12 + 20C9(.3)^9(.7)^11<BR>\n" );
document.write( "Let me know this works for You. </SPAN>\n" );
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