document.write( "Question 508317: What is the probability that the student is a sophomore given he doesn't carry a credit card?\r
\n" ); document.write( "\n" ); document.write( "Class Credit Card Carrier Not a Credit Card Carrier Total
\n" ); document.write( "Freshman 33 27 60
\n" ); document.write( "Sophomore 6 24 40
\n" ); document.write( "Total 39 61 100
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Algebra.Com's Answer #340970 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
What is the probability that the student is a sophomore given he doesn't carry a credit card?\r
\n" ); document.write( "\n" ); document.write( "Class Credit Card Carrier Not a Credit Card Carrier Total
\n" ); document.write( "Freshman 33 27 60
\n" ); document.write( "Sophomore 6 24 40
\n" ); document.write( "Total 39 61 100\r
\n" ); document.write( "\n" ); document.write( "---
\n" ); document.write( "P(soph | carries card)
\n" ); document.write( "= P(soph AND cc)/P(cc)
\n" ); document.write( "= (24/100)/(61/100)
\n" ); document.write( "= 24/61
\n" ); document.write( "------
\n" ); document.write( "P(choice | condition)
\n" ); document.write( "Note: The easy way to find these answers
\n" ); document.write( "when you have a contingency chart is to
\n" ); document.write( "remember that the \"conditional\" is the
\n" ); document.write( "universe and the choice is a subset of
\n" ); document.write( "of the conditional. So your conditional
\n" ); document.write( "has 61 and your choice has 24. So your
\n" ); document.write( "answer is 24/61.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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