Multiple Choice
You put your product on 20% off sale market A but leave it unchanged in market B.Sales in A increase from 840 to 1040 units per week while sales in B rise from 770 to 830.The Difference-in-difference estimate of the effect of the price change is:
A) 80 units
B)
100 units
C) 120 units
D) 130 units
Correct Answer:

Verified
Correct Answer:
Verified
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