The probability that your call to a service line is answered in less than 30 seconds is 0.75. Assume that your calls are independent. (a) If you call 10 times, what is the probability that exactly nine of your calls are answered within 30 seconds? (b) If you call 20 times, what is the probability that at least 13 calls are answered in more than 30 seconds? (C) If you call 20 times, what is the mean number of calls that are answered in less than 30 seconds?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Question 4
The probability that your call to a service line is answered in less than 30 seconds is 0.75. Assume that your calls are independent.
(a) If you call 10 times, what is the probability that exactly nine of your calls are answered within 30 seconds?
(b) If you call 20 times, what is the probability that at least 13 calls are answered in more than 30 seconds?
(C) If you call 20 times, what is the mean number of calls that are answered in less than 30 seconds?
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Transcribed Image Text:Question 4 The probability that your call to a service line is answered in less than 30 seconds is 0.75. Assume that your calls are independent. (a) If you call 10 times, what is the probability that exactly nine of your calls are answered within 30 seconds? (b) If you call 20 times, what is the probability that at least 13 calls are answered in more than 30 seconds? (C) If you call 20 times, what is the mean number of calls that are answered in less than 30 seconds? Use the editor to format your answer
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