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Mathematics, 07.03.2020 03:33 Inriso

6. The customer service department of Verizon has determined that the average
customer service call is 9.2 minutes, with a standard deviation of 2.4 minutes. Assume that the call
times are normally distributed.
a) Find the probability that a call will be less than 8 minutes.
a) Find the probability that a call will be more than 7 minutes.
b) Find the probability that a call will be between 8 and 15 minutes.

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