Find the probability that a randomly selected month had a PCE that falls below $550.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Transcribed Image Text:A new phone system was installed last year to help reduce the expense of
personal calls that were being made by employees. Before the new system
was installed, the amount being spent on personal calls follows a normal
distribution with an average of $700 per month and a standard deviation of
$50 per month. Refer to such expenses as PCE's (personal call expenses).
Find the probability that a randomly selected month had a PCE that falls
below $550.
0.0013
0.7857
0.9987
0.2143
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