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

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

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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not a graded question - practice question

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 7 of the calls involve a fax message?
[Box for answer]

(b) What is the probability that exactly 7 of the calls involve a fax message?
[Box for answer]

(c) What is the probability that at least 7 of the calls involve a fax message?
[Box for answer]

(d) What is the probability that more than 7 of the calls involve a fax message?
[Box for answer]

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