SOLUTION: It is known that 20% of men and 30% of women experience an allergic reaction to a certain drug. For a group consisting of four men and three women, find the probabilities that (i)

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Question 866307: It is known that 20% of men and 30% of women experience an allergic reaction to a certain drug. For a group consisting of four men and three women, find the probabilities that (i) no one and (ii) exactly one person will suffer an allergic reaction to this drug.
Answer by ewatrrr(24785) About Me  (Show Source):
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Suffer allergic reaction: 20% of men and 30% of women experience an allergic reaction
group consisting of four men and three women
(i) no one %28.80%5E4%29%28.70%29%5E3
(ii) exactly one person (M 0r F) = %28.20%29%28.80%5E3%29%28.70%29%5E3+%2B%28.30%29%28.80%5E4%29%28.70%29%5E2+ Note: Addition '0r'