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In a large sample of customer accounts, a utility company determined that the average number of days between when a bill was sent out and
In a large sample of customer accounts, a utility company determined that the average number of days between when a bill was sent out and when the payment was made is 24 with a standard deviation of 18 days. Assume the data to be approximately bell-shaped. Approximately 95% of all customer accounts have the average number of days between two values A and B. What is the value of B? Write only a number as your answer.
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