Question 655306
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Hi,
300 patients found that of 100 alcoholic patients, 87 had elevated cholesterol levels,  
and of 200 nonalcoholic patients, 43 had elevated cholesterol levels. 
P(A & elevated cholesterol levels) = {{{(100/300)*( 87/100) = 87/300}}}
P(not A) = 2/3 = {{{66&2/3}}}%
P(not A & non-elevated cholestrol levels) = {{{(200/300)*(157/200) = 157/300}}}