SOLUTION: A study of 300 patients found that of 100 alcoholic patients, 87 had elevated cholesterol levels, and of 200 nonalcoholic patients, 43 had elevated cholesterol levels. If a patient

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Question 655306: A study of 300 patients found that of 100 alcoholic patients, 87 had elevated cholesterol levels, and of 200 nonalcoholic patients, 43 had elevated cholesterol levels. If a patient is selected at random, find the probability of:\
a. an alcoholic with elevated cholesterol level
b. a nonalcoholic
c. a nonalcoholic with non-elevated cholesterol level
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

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) = %28100%2F300%29%2A%28+87%2F100%29+=+87%2F300

P(not A) = 2/3 = 66%262%2F3%

P(not A & non-elevated cholestrol levels) = %28200%2F300%29%2A%28157%2F200%29+=+157%2F300