Question: For the data in problem 21, the correlation between the number of crimes and population is r = 0.933, which means that r2 = 0.87

For the data in problem 21, the correlation between the number of crimes and population is r = 0.933, which means that r2 = 0.87 (87%) is the proportion of variance in the number of crimes that is predicted by population size. Does adding the amount spent on crime prevention as a second variable in the multiple regression equation add a significant amount to the prediction? Test with α = .05.

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