Question
(19) In a large sample of customer accounts, a utility company determined that the average number of days between when a bill was sent out
(19) 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 is26 with a standard deviation of6 days. Assume the data to be approximately bell-shaped.
Estimate the percentage of customer accounts for which the number of days is between 8 and 44.
68%, 95%, 75%, 88.9% or almost all?
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Elementary Statisitcs
Authors: Barry Monk
2nd edition
1259345297, 978-0077836351, 77836359, 978-1259295911, 1259295915, 978-1259292484, 1259292487, 978-1259345296
