Question: In the model y = a + Bx+u, i = 1,..., N, the following sample moments have been calculated from 10 observations: =8 = 40

In the model y = a + Bx+u, i = 1,..., N, the following sample moments have been calculated from 10 observations: =8 = 40 =26 x = 200 = 20

(a) Calculate the predictor of y for x = 10 and obtain a 95% confidence interval for it.

(b) Calculate the value of x that could have given rise to a value of y = 1 and explain how you would find a 95% confidence interval for it.

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