Construct 95 % confidence intervals for the coefficients b1 and b2 from the regression in question 27.

Question 27

Suppose the economist of question 26 collects the following data.

(a) Estimate the demand for movie tickets.

(b) Do the coefficients carry the correct signs?

(c) If you were going to use a t-test to test the significance of b₁ and b₂, should you use a one-tailed or a two-tailed test?

(d) Use a t-test to test the significance of b₁ and b₂.

Question 26

An economist at the National Academy of Movie Theater Owners wants to estimate the demand for movie tickets. He chooses to estimate the equation.

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Year 1986 1987 1988 1989 1990 1991 QT 1,000 1,100 1,200 1,300 1,400 1,500 PT $7.00 7.25 6.75 6.50 6.50 6.25 GNP 1,000 1,250 1,175 1,800 2,000 2,250