Question 1200947
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The conditional probability  P(E|F) is the ratio

    P(F|E) = {{{P(E_and_F)/P(E)}}}.


which, with the given values, is

    0.7 = {{{P(E_and_F)/0.28}}}.


From this equation, we find   P(E and F) = 0.7*0.28 = 0.196.


<U>ANSWER</U>.  P(E and F) = 0.196.
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Solved.