Is this model useful for prediction? Why or why not? Use the = 0.05 level. Exercises
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Is this model useful for prediction? Why or why not? Use the α = 0.05 level.
Exercises 11–15 refer to the following data set:
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x1 *2 x3 69.8 7.9 37.3 62.4 32.3 9.3 20.2 40.7 66.9 13.3 30.5 48.7 87.5 27.4 38.8 35.8 93.5 9.3 40.1 28.9 65.1 23.3 29.2 46.9 50.4 58.2 26.3 24.1 11.5 48.7 21.5 19.0 52.8 25.5 32.2 34.7 58.0 8.3 37.9 23.7 65.6 30.1 34.6 56.2 42.3 21.1 23.9 42.6
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