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Find the probability that you finish talking to customer

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You are on hold with the phone company. The average time for each customer to spend talking to customer service follows the normal distribution with a mean 4 minutes and a standard deviation of 1 minute. There are 9 people ahead of you in the queue.

Find the probability that you finish talking to customer service in:

a. Less than 30 minutes

b. Between 30 and 40 minutes

c. More than 40 minutes

Reference no: EM132845842

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