Pay your bills: In a large sample of customer accountsr a utility company determined that the average number of days between when a bill was sent out and when the payment was made is 25 with a standard deviation of 3 days. Assume the data to be approximately bellshaped. (a) Between what two values will approximately 95% of the numbers of days be? Approximately 95% of the customer accounts have payment made between [:1 and E] days