Question: 11.58 Suppose a scientist postulates a model: Yi = 5+1xi + i, i = 1, 2, . . . , n. (a) What is the

11.58 Suppose a scientist postulates a model:

Yi = 5+β1xi + i, i = 1, 2, . . . , n.

(a) What is the appropriate least squares estimator of

β1 ? Justify your answer.

(b) What is the variance of the slope estimator?

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