The following interactions between binary and continuous variables are possible, with the exception of
A) Yi = ?0 + ?1Xi + ?2Di + ?3(Xi × Di) + ui.
B) Yi = ?0 + ?1Xi + ?2(Xi × Di) + ui.
C) Yi = (?0 + Di) + ?1Xi + ui.
D) Yi = ?0 + ?1Xi + ?2Di + ui.
Answer: C
Economics
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Refer to Figure 7-4. The efficient quantity of medical services is
A) 200. B) 500. C) 700. D) >700.
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The slope of the isocost line tells the firm how much
A) capital must be reduced to keep total cost constant when hiring one more unit of labor. B) capital must be increased to keep total cost constant when hiring one more unit of labor. C) more expensive a unit of capital costs relative to a unit of labor. D) the isocost curve will shift outward if the firm wishes to produce more.
Economics