document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=995814>Question 995814</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello.  I need some help with probability problems. I have never had a class on statistice and probability so I am completely lost on the formulas I need to use to sole these problems.<BR>\n" );
document.write( "Email. r.jennings3@aol.com\r<BR>\n" );
document.write( "\n" );
document.write( "1. what is the formula for probability problem which will solve the probability of 86 students of 100 following directions?\r<BR>\n" );
document.write( "\n" );
document.write( "2. How do I find the probability  of single- randomly selected shopper for buying clothes or electronics but not both? 500 customers, 320 shopped for clothes, 295 shopped for electronics, 175 shopped for both. Part B how can these numbers be shown in a venn diagram with four regions i.e..<BR>\n" );
document.write( "2 over lapping circles inside a squre the first circle is RI the second Circle RIII the over lap RII and the outside square RIV. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #614488 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=614488\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1. what is the formula for probability problem which will solve the probability of 86 students of 100 following directions?<BR>\n" );
document.write( "Formula: P(follow directions) = (# who follow directions)/(total # of students)<BR>\n" );
document.write( "Ans: P(follow) = 86/100<BR>\n" );
document.write( "------------------------------------- <BR>\n" );
document.write( "2. How do I find the probability of single- randomly selected shopper for buying clothes or electronics but not both? 500 customers, 320 shopped for clothes, 295 shopped for electronics, 175 shopped for both. <BR>\n" );
document.write( "Part B how can these numbers be shown in a venn diagram with four regions i.e.<BR>\n" );
document.write( "Sketch a rectangle with two intersecting circles inside the rectangle.<BR>\n" );
document.write( "Label the circles:: clothes ; electronics<BR>\n" );
document.write( "175 is the number in the intersection of the 2 circles<BR>\n" );
document.write( "320-175 = 145 is the number in clothes but not in the intersection<BR>\n" );
document.write( "295-175 = 120 is the number in electronics but not in the intersection<BR>\n" );
document.write( "P(clothes or elect) = P(clothes) + P(electronics)-P(clothes AND electronics)<BR>\n" );
document.write( "= (320+295-175)/500 = 440/500 = 11/25<BR>\n" );
document.write( "-------------------------------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );