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Effectiveness of hunting decoys. Using decoys is a common method of hunting waterfowl. A study in the Journal of Wildlife Management (July 1995) compared the effectiveness of three different decoy types-taxidermy-mounted decoys, plastic shell decoys, and full-bodied plastic decoys-in attracting Canada geese to sunken pit blinds. In order to account for an extraneous source of variation, three pit blinds were used as blocks in the experiment. Thus, a randomized block design with three treatments (decoy types) and three blocks (pit blinds) was employed. The response variable was the percentage of a goose flock to approach within 46 meters of the pit blind on a given day. The data are given in the table on p. 703.† A MINITAB printout of the analysis follows.
(a) Find and interpret the F statistic for comparing the response means of the three decoy types.
(b) Perform the analysis, part a, by fitting and comparing the appropriate linear models. Verify that the results agree.
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