Question: For the regression equation obtained in Exercise 15.91, analyze the residuals by (a) Constructing a histogram, (b) Using a normal probability plot, (c) Plotting the

For the regression equation obtained in Exercise 15.91, analyze the residuals by
(a) Constructing a histogram,
(b) Using a normal probability plot,
(c) Plotting the residuals versus the x values, and
(d) Plotting the residuals versus the order in which they were observed. Do any of the assumptions of the simple linear regression model appear to have been violated?

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