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The Customer Service Center in a large New York department store has determined that the amount...

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Basic Math

The Customer Service Center in a large New York department storehas determined that the amount of time spent with a customer abouta complaint is normally distributed, with a mean of 8.5 minutes anda standard deviation of 2.4 minutes. What is the probability thatfor a randomly chosen customer with a complaint, the amount of timespent resolving the complaint will be as follows. (Round youranswers to four decimal places.)

(a) less than 10 minutes


(b) longer than 5 minutes


(c) between 8 and 15 minutes

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