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A banker studying customer needs finds that the number of times people use automated-teller…

A banker studying customer needs finds that the number of times people use automated-teller machines (ATMs) in a year are normally distributed with a mean of 40.0 anda standard deviation of 11.4 (based on data from Maritz Marketing Research, Inc.). Find the percentage of customers who use ATMs between 45 and 55 times. Round to thenearest tenth.

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