Refer to Exercise 11-17. (a) Is there a difference between the mean degree of lateness of company
Question:
Refer to Exercise 11-17.
(a) Is there a difference between the mean degree of lateness of company 3 and that of the averages of companies 1 and 2? Test at the 5% level of significance.
(b) Find a 90% confidence interval for the contrast defined in part (a).
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Related Book For 
Fundamentals Of Quality Control And Improvement
ISBN: 9781119692331
5th Edition
Authors: Amitava Mitra
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