Question: Refer to Exercise 13. a. Find a 95% confidence interval for the coefficient of Oxygen. b. Find a 99% confidence interval for the coefficient of

Refer to Exercise 13.

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

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

c. Find a 98% confidence interval for the coefficient of the interaction term Oxygen ⋅ Nitrogen.

d. Can you conclude that ????1 < −75? Find the P-value.

e. Can you conclude that ????2 > −1000? Find the P-value.

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