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A particular telephone number is used to receive both voice calls and fax messages. Suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (Round your answers to three decimal places.) (a) What is the probability that at most 8 of the calls involve a fax message? (b) What is the probability that exactly 8 of the calls involve a fax message? (c) What is the probability that at least 8 of the calls involve a fax message? (d) What is the probability that more than 8 of the calls involve a fax message?

User Nandu
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1 Answer

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Answer:

a) 0.8505

b) 0.1241

c) 0.2736

d) 0.1495

Explanation:

A particular telephone number is used to receive both voice calls and fax messages-example-1
A particular telephone number is used to receive both voice calls and fax messages-example-2
User Vesche
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