Question: Exercise 13. 10 presented y = hardness of molded plastic and x = time elapsed since the molding was completed. Summary quantities included a. Calculate

Exercise 13. 10 presented y = hardness of molded plastic and x = time elapsed since the molding was completed. Summary quantities included

a. Calculate the estimated standard deviation of the statistic
b. Obtain a 95% confidence interval for b, the slope of the population regression line.
c. Does the interval in Part (b) suggest that b has been precisely estimated? Explain.

n=15 b= 2.50 SSResid= 1235.470 (x- 2 = 4024.20

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