In: Statistics and Probability
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
29 with a standard deviation of 5 days. Assume the data to be approximately bell-shaped.
1) Estimate the percentage of bills for which payment was made in greater than 34 days. Approximate what percent of the bills have payments greater than 34.