Multiple Choice
In testing if promotions (binary) Pi have an effect on sales, Si with a null hypothesis that the average treatment effect is zero, the null hypothesis could be written as:
A) E [Si (Pi = 1) - Si (Pi = 0) ] = 0
B) E [Pi - Si ] = 0
C) E [Pi - Si ] = 1
D) E [Si (Pi = 1) - Si (Pi = 0) ] = ETT
Correct Answer:
Verified
Correct Answer:
Verified
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