Question 1154827
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What is the probability the student is not a credit card carrier and a sophomore?

<pre>
            credit card carrier|not a credit card carrier | total
freshman             40        |    20                    |  60
sophomore            25        |    15                    |  40
overall total=                                            | 100
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 P(not a credit card carrier and a sophomore) = {{{15/100}}} = {{{3/20}}} = 0.15.
</pre>

Answered, solved and completed.