Confidence interval estimation and sample size
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At a large department store, the average number of years of employment for a cashier is 5.7 with a standard deviation of 1.8 years. If the number of years of employment at this department store is normally distributed, what is the probability that a cashier selected at random has worked at the store for over 10 years?
A) 0.4916
B) 0.9916
C) 0.0084
D) 0.0054
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Solution Summary
The solution provides step by step method for the calculation of confidence interval and sample size . Formula for the calculation and Interpretations of the results are also included.
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Confidence Interval and Sample Size
At a large department store, the average number of years of employment for a cashier is 5.7 with a standard deviation of 1.8 ...
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