Consider the following set of data:

a. Obtain the estimated regression equation.
b. Examine the coefficient of determination and the adjusted coefficient of determination. Does it seem that either of the independent variables€™ addition to R2 does not justify the reduction in degrees of freedom that results from its addition to the regression model? Support your assertions.
c. Conduct a hypothesis test to determine if the dependent variable increases when x2 increases. Use a significance level of 0.025 and the p -value approach.
d. Construct a 95% confidence interval for the coefficient of x1

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