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A particular telephone number is used to receive both voice calls and fax messages. Suppose that 20% of the incoming calls involve fax messages, and consider a sample of 20 incoming calls. (Round your answers to three decimal places.)

(a) What is the probability that at most 7 of the calls involve a fax message?

(b) What is the probability that exactly 7 of the calls involve a fax message?

(d) What is the probability that more than 7 of the calls involve a fax message?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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