Exercise 28 A supermarket wants to see the effects of coupons on spending. They believe that male

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Exercise 28

A supermarket wants to see the effects of coupons on spending. They believe that male and female heads of households will respond differently to the coupons. The supermarket chooses 200 males and 200 females, and sends half of each group the coupon, while half receive nothing. The outcome measure is expenditures in the following week.

The analyst who designed the experiment in Exercise 28 obtained the data, which is plotted are in the graph below.

a) Is there an interaction effect that is large enough to be worrisome?

b) The regional manager of the chain is having trouble interpreting the results. What conclusions would you draw from the experiment?

c) Is this experiment blinded?

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Business Statistics

ISBN: 9780134705217

4th Edition

Authors: Norean Sharpe, Richard Veaux, Paul Velleman

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