WorksheetsExpected Value Spiral Review
Total questions: 10
Worksheet time: 48mins
Find the mean (expected value) of the probability distribution.
85
83.2
87.1
84.4
Suppose you buy a ticket for $6 out of a lottery of 1000 tickets where the prize for the one winning is to be $800. How much money do you take home (after paying for it)?
$800
-$6.50
-$6
-$5.20
Determine which of the following distribution is NOT a probability distribution.
A
B
C
D
What is the expected value?
-3.7
5.9
1.44
-1.1
What is expected value of the spinner?
3.3
6
3.7
11
If the expected value of a carnival game is negative, are you expected to win?
yes
no
Your friend shuffles a standard deck of cards and says to pick one. If you pick a face card (Jack, Queen, King of each suit) your friend will give you $10. If you pick anything else, you owe your friend $5. How much should you expect to win or lose by playing this game?
Lose $6.15
Win $6.15
Lose $1.50
Win $1.50
The table represents the probability of guessing correct on a 5 question true-false quiz. Find the mean and the standard deviation.
μ = .4; σ = 7.5
μ = 2.5; σ = 1.1
μ = 3; σ = 1.3
μ = .1; σ = 0
