Question: Problem A4 (20 pts). On average, do people gain weight as they age? We provide some ay statistics for both age (x) and weight

Problem A4 (20 pts). On average, do people gain weight as they age? We provide some ay statistics for both age (x) and weight (y). 280 44520.80 -11211.00 Ey-8110405.02 -543503.00 ..), = 1996904.15 (4) Calculate the least squares estimates of the slope and intercept. (b) Use the equation of the fitted line to predict the weight that would be observed, on average, for a man who is 25 years old. (c) Suppose that the observed weight of a 25-year-old man is 170 lbs. Find the residual for that observation. (d) Was the prediction for the 25-year-old in part (c) an overestimate or underestimate?

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