Answered: (b) Estimate the percentage of customer…

(b) Estimate the percentage of customer accounts for which the number of days is between 19 and 39. (Choose one) of the customer accounts have payment made between 19 and 39 days.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

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. Answer the question below.

(b) Estimate the percentage of customer accounts for which the number of days is between
19 and 39.
(Choose one)
of the customer accounts have payment made between 19 and
39 days.

Approximately 68%
Approximately 95%
Approximately 75%
Approximately 88.9%
Almost all
(Choose one)
je of customer accounts for which the number of days is between
of the customer accounts have payment made between 19 and
39 days.

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