document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=144311>Question 144311</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You have 50 microwaves. Out of the 50 you have 4 defective ones. What is the probability that 2 out of the first 5 microwaves sold are defective? and how do I set up the equation? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #105069 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=105069\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You have 50 microwaves. Out of the 50 you have 4 defective ones. What is the probability that 2 out of the first 5 microwaves sold are defective? and how do I set up the equation?<BR>\n" );
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document.write( "This is a binomial distribution problem.<BR>\n" );
document.write( "P(defective) = 4/50 <BR>\n" );
document.write( "P(not defective) = 46/50<BR>\n" );
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document.write( "P(2 of 5 are defective) = 5C2*(4/50)^2*(46/50)^3 = 0.049836...<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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