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- Unit 05: Estimation and Hypothesis
- According to a customer satisfaction
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Card 29 / 180: According to a customer satisfaction survey conducted on behalf of the nation's largest retailer, the average rating of satisfaction for customers in 2008 was 85.4 (out of 100). Assume that the population mean is 85.4 for the customer satisfaction rating, the customer satisfaction rating is normally distributed, and the population standard deviation is 8.2. What is the probability that a randomly selected customer will have a satisfaction rating between 75.0 and 95.0?
A)
0.78
B)
0.10
C)
0.88
D)
0.22
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Business Statistics
Author:
David BourgeoisLecturer
The Saylor Academy
USA
Access:
Public
Instant Grading
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Attribution:
David T. Bourgeois, PhD; Bharatendra K. Rai, PhD. Business Statistics. The Saylor Academy 2014, http://www.saylor.org/courses/bus204/
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