Question: (a) A confidence interval for 1 is calculated to be (2.21929, 3.017580). Find the confidence level used. (b) Define the joint 95% confidence region of

. (8 pt) The file income.csv contains the income at age 30

(a) A confidence interval for β1 is calculated to be (2.21929, 3.017580). Find the confidence level used.

(b) Define the joint 95% confidence region of β0, β1.

. (8 pt) The file income.csv contains the income at age 30 and the number of years of formal education of 15 individuals. We would like to model the effect of education on income via a linear model y = XB + , where 3 = [Bo B T.

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