Exercise 1-4.2 A telephone switching center survey indicates that one of four calls is a business call, that one-tenth of business calls are long distance, and one­ twentieth of nonbusiness calls are long distance. a) What is the probability that the next call will be a nonbusiness long­ distance call? b) What is the probability that the next call will be a business call given that it is a long-distance call’t c) What is the probability that the next call will be a nonbusiness call given that the previous call was��mg distance?

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  • [answered] Exercise 1-4.2 A telephone switching center survey indicates that one of four calls is a business call, that one-tenth of business calls are long distance, and one­ twentieth of nonbusiness calls are long distance. a) What is the probability that the next call will be a nonbusiness long­ distance call? b) What is the probability that the next call will be a business call given that it is a long-distance call't c) What is the probability that the next call will be a nonbusiness call given that the previous call was��mg distance?
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Exercise 1-4.2
A telephone switching center survey indicates that one of four calls is a business call, that one-tenth of business calls are long distance, and one­ twentieth of nonbusiness calls are long distance.
a) What is the probability that the next call will be a nonbusiness long­ distance call?
b) What is the probability that the next call will be a business call given that it is a long-distance call’t
c) What is the probability that the next call will be a nonbusiness call given that the previous call was��mg distance?

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