document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=421251>Question 421251</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have a probability distribution of customers visiting a store as follows:\r<BR>\n" );
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document.write( "18% of customers come 2x a week<BR>\n" );
document.write( "25% of customers come 3x a week<BR>\n" );
document.write( "33% of customers come 4x a week<BR>\n" );
document.write( "13% of customers come 5x a week<BR>\n" );
document.write( "8% OF customers come 6x a week<BR>\n" );
document.write( "3% of customers come 7x a week\r<BR>\n" );
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document.write( "How many unique customers do I need to have a total of 400 customers every week? Assuming that every visitor is a customer and will purchase. \r<BR>\n" );
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document.write( "Been muddling thru this for a week now without any success!!! Please help. Thanks so much. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #294240 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=294240\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I have a probability distribution of customers visiting a store as follows: <BR>\n" );
document.write( "18% of customers come 2x a week<BR>\n" );
document.write( "25% of customers come 3x a week<BR>\n" );
document.write( "33% of customers come 4x a week<BR>\n" );
document.write( "13% of customers come 5x a week<BR>\n" );
document.write( "8% OF customers come 6x a week<BR>\n" );
document.write( "3% of customers come 7x a week <BR>\n" );
document.write( "How many unique customers do I need to have a total of 400 customers every week? Assuming that every visitor is a customer and will purchase.<BR>\n" );
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document.write( "Let \"x\" be the number of unique customers:<BR>\n" );
document.write( "Solve:<BR>\n" );
document.write( "2*0.18x + 3*0.25x + 4*0.33x + 5*0.13x + 6*0.08x + 7*0.03x = 400<BR>\n" );
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document.write( "0.36x + 0.75x + 1.32x + 0.65x + 0.48x + 2.1x = 400<BR>\n" );
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document.write( "5.66x = 400<BR>\n" );
document.write( "x = 70.67 unique customers<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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