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a) If the probabilities that Joan, Beverly and Evelyn will be elected secretary of a ski...

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Statistics

a) If the probabilities that Joan, Beverly and Evelyn will beelected secretary of a ski club are 1/8, 2/5, and 1/3 respectively,find the probability that one of the three will be elected.

b) Chris and Janet are among twenty girls who enter a tennistournament. What is the probability that either one of these twogirls will win the tournament?

c) If the probabilities that Mary and Sue will receive awards ina contest are 3/5 and 1/3 respectively, what is the probabilitythat one or the other will receive an award?

d) A bag contains six white balls, four green balls, and threebrown balls. If three balls are drawn, one at a time, and the ballis replaced after each drawing, what is the probability that theballs drawn will be green, white and brown?

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