The manager of an ice-cream parlor decides to introduce a new ice-cream flavor in his Dallas, TX based restaurants to compare the sales of these restaurants to the ones with no new flavors. She decides to run a difference in difference approach. Which of the following is true?
a. The first difference would be the difference in the sales of the Dallas stores before and after the introduction
b. The second difference would be the difference in the sales in other stores before and after the Dallas stores introduced the new flavor
c. The second difference would be the difference between the post introduction sales in the Dallas stores and the control group
d. Only A&B
d
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The M2 money supply is represented by
A) M2 = × MB. B) M2 = × . C) MB = × M2. D) MB = × .
Keynesians reject the influence of monetary policy on the economy. One argument supporting this Keynesian view is that the:
a. money demand curve is horizontal at any interest rate. b. aggregate demand curve is nearly flat. c. investment demand curve is nearly vertical. d. money demand curve is vertical.