customer satisfaction survey has been recently conducted by Company A. Most customers were satisfied with their services, with only 5% of them citing some form of dissatisfaction. Suppose a random sample of
customer satisfaction survey has been recently conducted by Company A. Most customers were satisfied with their services, with only 5% of them citing some form of dissatisfaction. Suppose a random sample of
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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A customer satisfaction survey has been recently conducted by Company A. Most customers were satisfied with their services, with only 5% of them citing some form of dissatisfaction.
Suppose a random sample of 200 customers were selected and assuming that normal approximation to the binomial distribution is considered in this case.
Let X = “the number of dissatisfied customers”.
(i) What are the assumptions needed and special adjustment for the normal approximation to the binomial distribution? Is the approximation valid for this case? Explain.
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