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Probability calculations

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Over 1,000 people try to climb Mt. Everest every year. Of those who try to climb Everest, 31% succeed. The probability that a climber is at least 60 years old is .04. The probability that a climber is at least 60 years old and succeeds in climbing Everest is .005.

(a) Find the probability od success, given that a climber is at least 60 years old.
(b) Is success in climbing Everest independent of age?

Please show how you get all calculations for the answer

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Over 1,000 people try to climb Mt. Everest every year. Of those who try to climb Everest, 31% succeed. The probability that a climber is at least 60 years old is .04. ...

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