Question: Refer to Exercise 1. a. Find a 95% confidence interval for the coefficient of Manganese. b. Find a 99% confidence interval for the coefficient of

Refer to Exercise 1.

a. Find a 95% confidence interval for the coefficient of Manganese.

b. Find a 99% confidence interval for the coefficient of Thickness.

c. Can you conclude that ????1 > 3? Perform the appropriate hypothesis test.

d. Can you conclude that ????2 < −0.1? Perform the appropriate hypothesis test.

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