Question: Determine the following values:

n = 479

Σ HP = 116,553

Σ MPG = 9,346

Σ (HP2) = 32,654,855

Σ (MPG2) = 196,038

Σ (HP x MPG) = 2,109,130

Using x = gasoline mileage & y = horsepower, perform the hypothesis test to determine whether the slope of the regression line for the population is equal to zero at the one percent level of significance.

[A] Why did you get the same or different answers in parts A & G?

[B] Compare your observed values of the test statistic in parts F & G. What conclusion do you reach from this comparison?

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