LT 3.1 Expected Value Day1 Review

What is the missing probability for when x = 5?

• 0.14

• 0.24

• 0.32

• 0.42

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

The following table shows the probability distribution for the number of children in each family in the town of Mathville. What is the average number of children in this town?

• 1.9

• 0.3

• 2.1

• 3

Tags

CCSS.HSS.MD.A.2

The following table shows the probability distribution for the number of children in each family in the town of Mathville. What is the probability a family has more than the expected number of children.

• 0.6

• 0.3

• 0.1

• 0.7

A student group sells 500 raffle tickets for a fundraiser. At the drawing the top prize will be a gift certificate for $100. Second prize will be a $50 gift card and there will be five 3rd prizes, each a $20 gift card. What is the expected value of a ticket?

• $1.50

• 50 cents

• $2.00

• $1.00

Tags

CCSS.HSS.MD.B.5A

The parents of a child make the following offers.

Father’s offer: The child flips a coin. If the coin lands heads up, the father will give the child $20. If the coin lands tails up, the father will give the child nothing.

Mother’s offer: The child rolls a 6-sided die. The mother will give the child $3 for each dot on the upside of the die.

Which offer has the greater expected value?

• Mother's Offer is better by $0.50 on average

• Father's Offer is better by $0.50 on average

• Mother's Offers is better by $1.50 on average

• Father's Offer is better by $1.50 on average

Tags

CCSS.HSS.MD.B.5B

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