the equation used to predict the total body weight in pounds of a female athlete

Question

the equation used to predict the total body weight in pounds of a female athlete at a certain schoolis y(hat) = - 124 + 3.68x1 + 1.47x2   where x1 is the females height in inches and x2 is the female athletes percent body fat measured as x2%. Use the multiple regresion equation to predict the total body weight for a femle athlete who is 63 inches talland has 19% body fat. The predicted total body weight for a female athlete who is 63 inches tall and has 19% body fat is ____pounds. (round to nearest tenth is needed)

Explanation / Answer

y(hat) = - 124 + 3.68x1 + 1.47x2

it is given that x1 is 63 and x2 is 19

thus y(hat)= - 124 + 3.68x*63 + 1.47*19 =135.77

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