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 26 with a standard deviation of 7 days. Assume the data to be approximately bell-shaped.
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 26 with a standard deviation of 7 days. Assume the data to be approximately bell-shaped.
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter1: Functions
Section1.1: Functions Given By Formulas
Problem 2TU: What is your monthly payment if you borrow 5000 at a monthly rate of 0.61 and pay it off in 5 years?
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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 26 with a standard deviation of 7 days. Assume the data to be approximately bell-shaped.
Part 2 of 3
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Transcribed Image Text:Part 2 of 3
(b) Estimate the percentage of customer accounts for which the number of days is between 19 and 33.
(Choose one)
of the customer accounts have payment made between 19 and 33 days.
Transcribed Image Text:Approximately 68%
Approximately 95%
Approximately 75%
Approximately 88.9%
Almost all
(Choose one)
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