Question: 13. Suppose in the simple linear regression model Y = + x + e that 0 (a) Show that if x (b) Show that

13. Suppose in the simple linear regression model Y = α + βx + e that 0

(a) Show that if x

x

(b) Show that if x > α/(1 − β), then

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and conclude that E[Y ] is always between x and α/(1 − β).

x

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