Multiple Choice
The expected value is
A) the product of the sums of the probability and the values in different states
B) the sum of the products of the probability and the values in different states
C) the difference between the products of the probability and the values in different states
D) the difference between the sums of the probability and the values in different states
Correct Answer:

Verified
Correct Answer:
Verified
Q1: When a variable can take on different
Q1: Four possibilities have probabilities 0.4,0.2,0.2 and 0.2
Q3: We worry that false negatives occur too
Q3: You want to run a difference-in-difference experiment
Q4: Half of all potential customers would pay
Q7: You want to run a difference-in-difference experiment
Q8: Half of all potential customers would pay
Q9: Heads and tails are equally likely but
Q11: You can invest in either project A
Q28: Three possibilities have probabilities 0.5,0.4 and 0.1