document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=367574>Question 367574</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bag contains 4 red and 3 blue balls. John and Paul selects a ball at random and replaces it. The experiment is repeated 7 times. Find the probability that:\r<BR>\n" );
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document.write( "a) all 7 selections are red\r<BR>\n" );
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document.write( "b) at least 5 are red\r<BR>\n" );
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document.write( "c) no more than 2 are red </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #261993 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=261993\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is a binomial distribution because there is replacement.<BR>\n" );
document.write( "x=4/7, y=3/7<BR>\n" );
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document.write( "a) (4/7)^7=.020<BR>\n" );
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document.write( "b) x^7+7x^6y+21x^5y^2=.359<BR>\n" );
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document.write( "c) 21x^2y^5+7xy^6+y^7=.127<BR>\n" );
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document.write( "Ed </SPAN>\n" );
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