Question: Refer to Exercise 16. Use the Tukey-Kramer procedure to identify which average purchases differ. Use a 95% level of confidence. In exercise The owner of

Refer to Exercise 16. Use the Tukey-Kramer procedure to identify which average purchases differ. Use a 95% level of confidence.
In exercise
The owner of a drugstore is wondering whether the amount of a customer's purchase varies by age group. The owner runs a contest with a grand prize of a $100 gift certificate that can be used in the store. The entry ballot requires the entrant to record his/her age group, and the amount of his/her most recent purchase.

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Because there are so many age groups in this data set it is not as easy to see where the greatest differences in samples means is simply by inspection The easiest way to proceed is to create a table s... View full answer

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