11/18 Expected Value (M4)
9th Grade - University
•25 Qs
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11/18 Expected Value (M4)
Quiz
•
Mathematics
•
9th Grade - University
•
Practice Problem
•
Medium
+7
Standards-aligned
Jennifer McClure
Used 18+ times
FREE Resource
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25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 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(50) = 0.1 P(20) = 0.3 P(5) =0.6
14
4.67
5
7.5
Tags
CCSS.HSS.MD.A.2
2.
MULTIPLE CHOICE QUESTION
5 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
3.
MULTIPLE CHOICE QUESTION
5 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 the ticket) if you win?
$800
-$6.50
-$6
-$5.20
Tags
CCSS.HSS.MD.B.5A
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suppose you pay $1.00 to roll a fair die with the understanding you will get $3.00 back rolling a 4 or a 2, and nothing otherwise. Is this a fair game?
yes
no
Tags
CCSS.HSS.CP.A.1
CCSS.HSS.CP.B.7
CCSS.HSS.MD.B.6
CCSS.HSS.MD.B.7
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Choose an American household at random. What is the expected number of cars for that household?
1.75
1.84
2.00
2.50
Tags
CCSS.HSS.MD.A.2
6.
MULTIPLE CHOICE QUESTION
3 mins • 12 pts
In a certain community, 30% of households have 1 child, 43% have 2 children, and 27% have 3 children. If a household is selected at random, what is the expected number of children in that household? HINT: A Probability table may be helpful.
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Find the expected value. READ CAREFULLY!
Tags
CCSS.HSS.MD.A.2
CCSS.HSS.MD.A.3
CCSS.HSS.MD.B.5
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