Suppose that we are interested in fitting a simple linear
Chapter 11, Problem 116MEE(choose chapter or problem)
Suppose that we are interested in fitting a simple linear regression model Y = ?0 + ?1x + where the intercept, ?0, is known. (a) Find the least squares estimator of ?1. (b) What is the variance of the estimator of the slope in part (a)? (c) Find an expression for a 100(1 ? ?)% confidence interval for the slope ?1. Is this interval longer than the corresponding interval for the case in which both the intercept and slope are unknown? Justify your answer.
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