Expected Value

Question 1

The expected value for the number of heads is .

Revolt · Accepted Answer

1

Question 2

The expected value in this case means .

Revolt · Accepted Answer

after repeated trials of flipping a coin twice, the average number of times heads will turn up is 1

Question 3

What is the expected value? Should you play the game?

Revolt · Accepted Answer

–3/13 points; no, you should not play the game

Question 4

For what expected value is a game fair?

Revolt · Accepted Answer

E(X) = 0

Question 5

⇒ 12

Revolt · Accepted Answer

-0.23

Question 6

The expected value of the number of points won on a spin is .

Revolt · Accepted Answer

–0.25 points

Question 7

Suppose you spin the carnival spinner 1,000 times. How many points would you expect to win or lose?

Revolt · Accepted Answer

lose 250 points

Expected Value Answers