Refer to Exercise 13.53. Construct a 90% confidence interval for the mean monthly salary of all secretaries

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Refer to Exercise 13.53. Construct a 90% confidence interval for the mean monthly salary of all secretaries with 10 years of experience. Construct a 90% prediction interval for the monthly salary of a randomly selected secretary with 10 years of experience.
In Exercise 53
Refer to Exercise 13.53. Construct a 90% confidence interval for
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