document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=216491>Question 216491</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A salesman of small business computer systems will contact 4 customers during a week. Each contact can result in either a sale, with probability 0.2, or no sale, with probability 0.8. Assume that customer contacts are independent. If X denotes the number of computer systems sold during the week, find the probability distribution of X.\r<BR>\n" );
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document.write( "Could you please show me how you got to the solution.  Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #163471 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=163471\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A salesman of small business computer systems will contact 4 customers during a week. Each contact can result in either a sale, with probability 0.2, or no sale, with probability 0.8. Assume that customer contacts are independent. If X denotes the number of computer systems sold during the week, find the probability distribution of X. <BR>\n" );
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document.write( "The random variable, X, has the following values: 0,1,2,3,4<BR>\n" );
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document.write( "P(0) = (.8)^4<BR>\n" );
document.write( "P(1) = 4C1(0.2)(0.8)^3<BR>\n" );
document.write( "P(2) = 4C2(0.2)^2(0.8)^2<BR>\n" );
document.write( "P(3) = <BR>\n" );
document.write( "P(4) = (0.2)^4 <BR>\n" );
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document.write( "These are the binomial probabilities for your experiment.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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