Expected Value Review

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.B.5A

If this game costs $22 and you play it 100 times how much do you expect to win or lose over those plays?

• $0

• $100 loss

• $200 profit

• $300 loss

Tags

CCSS.HSS.MD.B.5A

What is the expected value of the spinner?

• 6.25

• 6.5

• 4.75

• 13

Tags

CCSS.HSS.MD.B.5A

You roll a standard die. You win $12 if you roll a six, $6 if you roll a one, and $0 if you roll anything else. What is the expected value of a single roll?

• $3

• $18

• $9

• $2

Tags

CCSS.HSS.MD.B.5A

A bag contains 4 red balls and 6 blue balls. You draw one ball at random. If you draw a red ball, you win $5. If you draw a blue ball, you lose $3. What is the expected value of a draw?

• $0.20

• $0.50

• $0.80

• $1.20

Tags

CCSS.HSS.MD.B.5A

A lottery ticket costs $3. The probability of winning $50 is 1/100, and the probability of winning $10 is 1/20. What is the expected value of buying a ticket?

• -$0.10

• $0.50

• $1.00

• $0.20

Tags

CCSS.HSS.MD.B.5A

A coin is flipped 3 times. If you get tails once you get $5, tails twice you get $15, and tails on all three flips you get $40. What is the expected amount of money you will get?

• $12.50
• $5
• $7.50
• $10

Tags

CCSS.HSS.MD.A.2

You roll a standard die. You win $12 if you roll a six, $6 if you roll a one, and $0 if you roll anything else. What is the expected value of a single roll?

• $3

• $18

• $9

• $2

Tags

CCSS.HSS.MD.B.5A

Pick a paw: There are six paw stickers, one of each color: orange, blue, green purple, yellow, and red facing downward. Pick a paw at random. If it is AJ colors (orange or blue), you win a coke (value $0.50). If it is any other color you pay $1.00. Is this a fair game?

• Yes, the expected value is $0

• No, the expected value is $0.50

• No, the expected value is -$0.50

• No, the expected value is -$1.00

Tags

PS.SPMD.4

Glass beads: in a jar there are:

16 orange beads

19 yellow beads

10 pink beads

5 blue beads

The player picks a bead at random. 

If the bead is pink the player wins $5.00. If it is blue the player wins $10.00. If it is orange the player pays $3.50. If it is yellow the player pays $2.50. Calculate the expected value for the host.

• The host loses 70 cents per game

• The host loses 7 cents per game

• The host wins 7 cents per game

• The host wins 70 cents per game

Tags

PS.SPMD.4