For the data in Exercise 46, estimate the percentage of bills for which the number of days
Question:
For the data in Exercise 46, estimate the percentage of bills for which the number of days between when a bill was sent and when payment was made was
a. greater than 39
b. less than 18
c. between 18 and 32
Exercise 46
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 32 with a standard deviation of 7 days. Assume the data to be approximately bell-shaped.
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