Suppose you are testing the statistical significance (at the 5% significance level) of a parameter estimate from the regression equation: Y = a + bR + cS + dWwhich is estimated using a time-series sample containing monthly observations over a 30-month time period. The critical value of the appropriate test statistic is
A. Fcritical = 7.76.
B. Fcritical = 4.22.
C. tcritical = 2.042.
D. tcritical = 2.056.
Answer: D
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A consumer has $20 that he wants to spend on two goods: pens priced at $2 each, and pencils priced at $1 each. Which of the following correctly represents his budget constraint?
A) $20 = ($2/Quantity of pens) + ($1/Quantity of pencils) B) $20 = ($2 × Quantity of pens) + ($1 × Quantity of pencils) C) $20 = ($3/Quantity of pens + Quantity of pencils) D) $20 = $3 × (Quantity of pens - Quantity of pencils)
From Example 1.2 in the textbook, Pindyck and Rubinfeld distinguish between the mass market and dealer market for bicycles. Although there are many dealers in the U.S and only a few mass merchandisers, we should expect the dealer market to be somewhat less competitive than the mass market. Why?
A) Due to their differences in quality and performance, dealer bicycles are not close substitutes. B) The geographic extent of the market for dealer bicycles is typically small, so the individual sellers do not have many local competitors. C) Dealers are small sellers and have little control over bicycle prices. D) A and B are correct. E) B and C are correct.
Refer to Figure 3. Originally, Ben was producing at his point A and Jerry was producing at his point A. Then, each person decided to specialize in the product in which he has a comparative advantage. Furthermore, they agreed to trade 4 pounds of cones for 2 pounds of ice cream. As a result of these new arrangements, the gains from trade relative to the original situation are as follows:
a. 1 additional pound of cones for Ben and 1 additional pound of ice cream for Jerry.
b. 1 additional pound of ice cream for Ben and 1 additional pound of cones for Jerry.
c. 2 additional pounds of ice cream for Ben and 2 additional pounds of cones for Jerry.
d. 2 additional pounds of ice cream for Ben and 1 additional pound of cones for Jerry.
The self-correcting tendency of the economy means that rising inflation eventually eliminates:
A. unemployment. B. exogenous spending. C. recessionary gaps. D. expansionary gaps.