An increase in the income of bus riders, accompanied by a ...

[waynest]

An increase in the income of bus riders, accompanied by a simultaneous increase in the wages of the bus drivers causes, the price for bus rides(an inferior good) _____________ and the quantity demanded for bus rides ____________.
 a. Decreases; decreases
  b. Increase; increases
 c. Uncertain, Decreases
  d. Uncertain, Increases

Question 2

You increase the advertising intensity for your product in market A but not in market B. Sales in A rise from 1140 to 1180 units per week while sales in B fall from 1270 to 1230 . The Difference-in-difference estimate of the effect of the increased advertising is:
 a. 0 units
 b. 80 units
 c. 100 units
  d. 120 units

[juliaf]

Answer to Question 1

c

Answer to Question 2

b