The formula for the best fit line is y= 37.285 - 5.344x, where y is mpg and x is weight of the car in tons. Which of the following is the correct interpretation of the estimated slope term? Why? a) For a 1-unit increase in weight, the mpg of the car increases by 5.344 on average   b) For a 1-unit increase in weight, the mpg of the car decreases by exactly 5.344   c) For a 1-unit increase in weight, the mpg of the car decreases by 5.344 on average   d) For each additional unit of mpg, the weight of the car decreases by exactly 5.344

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