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Mathematics, 24.06.2020 07:01 brae72

Pay your bills: 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 27 with a standard deviation of 6 days. Assume the data to be approximately bell-shaped
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(a) Between what two values will approximately 95% of the numbers of days be?
Approximately 95% of the customer accounts have payment made between and days
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