Question: Problem 11.4 Refer to Problem 10.12 of Chapter 10. (a) State the matrix formulation of the the Model (Y = TDS |X = SEC). (b)

Problem 11.4 Refer to Problem 10.12 of Chapter 10.

(a) State the matrix formulation of the the Model (Y = TDS |X = SEC).

(b) State the normal equations for this model in the matrix format 11.4.

(c) Verify that βˆ0 = 29.268569 and βˆ1 = 0.597884 satisfy the normal equations given in part (b).

(d) Compute the estimated variance–covariance matrix s2(X X)−1.

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