Time Fixed Effects regression are useful in dealing with omitted variables
A) even if you only have a cross-section of data available.
B) if these omitted variables are constant across entities but vary over time.
C) when there are more than 100 observations.
D) if these omitted variables are constant across entities but not over time.
Ans: B) if these omitted variables are constant across entities but vary over time.
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Long-term increases in productivity that have increased the demand for labor, and raised real wages, have resulted primarily from ________ and ________.
A. a modernized capital stock; an increased labor supply B. a modernized capital stock; skill-biased technological change C. technological progress; a modernized capital stock D. technological progress; an increased labor supply
Refer to Scenario 12.1. Suppose that a third friend, Ryan, joins Simon and Paula on their way home from school, and this reduces the probability of any particular individual from stepping forward to help the man being attacked from 70% to 40%
What is the probability of either Simon, Paula, Ryan, or any combination of the three trying to rescue the man? A) 28.8% B) 49.6% C) 78.4% D) 93.6%
A decrease in the demand for beef because of concerns over cholesterol results in
A) lower beef prices. B) higher beef prices. C) an increase in the supply of beef. D) an offsetting increase in the demand for beef if the price of beef falls.
A firm has three different investment options. Option A will give the firm $10 million at the end of one year, $10 million at the end of two years, and $10 million at the end of three years. Option B will give the firm $15 million at the end of one year, $10 million at the end of two years, and $5 million at the end of three years. Option C will give the firm $30 million at the end of one year,
and nothing thereafter. Which of these options has the highest present value? a. Option A b. Option B c. Option C d. The answer depends on the rate of interest, which is not specified here.