In a road test for new car models, one variable measured is acceleration. To mod

Question

In a road test for new car models, one variable measured is acceleration. To model acceleration time, a regression analysis is conducted on a random sample of 129 new cars. TIME60: y = Elapsed time (in seconds) from 0 mph to 60 mph MAX: x = Maximum speed attained (miles per hour) The regression has the following regression output: A. Slope = 18.7171. For every 1 mile per hour increase in the maximum speed, the 0-to-60 acceleration time is predicted to increase by 18.7171 seconds. B. Slope = -0.08365. For every 1 mile per hour increase in the maximum speed, the 0-to-60 acceleration time is predicted to decrease by 0.08365 seconds. C. Slope = -0.08365. For every 1 second increase in the 0-to-60 acceleration time, the maximum speed is predicted to decrease by 0.08365 mph. D. Slope = 0.00491. For every 1 second increase in the 0-to-60 acceleration time, the maximum speed is predicted to increase by 0.00491 mph.

Explanation / Answer

Slope would be -0.8365 which means for every 1 mile per hour increase in maximum speed, the 0-60 acceleration time is predicted to decrease by 0.8365. This observation has been obtained from the given table.

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