Expected Value
Authored by Erin Jacox
Mathematics
12th Grade
CCSS covered
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Given the probability model in the table below, what is the expected value of the random variable?
X 50 20 5
P(X) 0.1 0.3 0.6
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
If the expected value is negative, are you expected to win?
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Eva flips a coin. If she gets heads, she wins $4. If she gets tails, she loses $3. What is her expected value of a coin flip?
$1
$0.50
-$0.50
$0
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Find the mean (expected value) of the probability distribution.
85
83.2
87.1
84.4
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.4
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
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
Tags
CCSS.7.EE.B.3
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Choose an American household at random. What is the expected number of cars for that household?
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
x 100 200 300 400
P(X=x) 0.1 0.7 0.1 0.1
Find the expected value.
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