Refer to the data on travel expenses in Exercise 14.6 and the F-test in Exercise 14.15. It is the ordering of the population means, and the sizes of their differences, that is the key finding of study.
(a) Calculate 95% simultaneous confidence intervals for the differences in means.
(b) Are these conclusions, concerning the position of the signature and dishonest self-reporting, consistent with those in Chapter 13, Example 6? Comment.
In Exercise 14.6

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Source Sum of Squares d.f Mean Square Treatment Error Total 346.79 100