Combining Expected Value

• 31.7
• 34.1
• 63.4
• 68.2

Choose an American household at random. What is the expected number of cars for that household?

• 1.75

• 1.84

• 2.00

• 2.50

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.

• 2.00

• 2.13

• 1.97

• 1.27

Find the expected value. READ CAREFULLY!

• 4.5

• 25.5

• 3.825

• 6.52

Find the mean (expected value) of the probability distribution.

• 85

• 83.2

• 87.1

• 84.4

Data was compiled and the number of goals for a hockey team per game and the corresponding probabilities are given below. If this hockey team plays an 82-game season, what is the expected cumulative goal total for the next season?

• 220

• 239

• 261

• 309

• 320

Data was compiled and the number of goals for a hockey team per game and the corresponding probabilities are given below. If this hockey team plays an 82-game season, what is the expected cumulative goal total for the next season?

• 220

• 239

• 261

• 309

• 320

The probability that you will make 85 on the quiz is 15% 70 on the quiz is 35% 60 on the quiz is 40% 50 on the quiz is 10% The teacher will let you have your current average of 72 on the quiz. Should you take the offer.

• Yes, my expected value for taking the quiz is 66.25

• Yes, my expected value for taking the quiz is 6.25

• Yes, my expected value for taking the quiz is 16.25

• Nah, I know I can make better than a 72 on that quiz

Tags

PS.SPMD.2

You pick a card from a deck. If you get a face card (12/52), you win $5. If you get an ace (4/52), you win $30. For any other card (26/52), you win nothing. Find the expected value you will win.

• $5.00

• $3.55

• $4.04

• $3.46

Using a deck of Uno cards (108 cards: 25 of each color plus eight wild cards): A player pays $1.00 to play. A wild cards pay $11.00. Calculate the expected value for the player.

• The player loses about 9 cents per play.

• The player wins about 9 cents per play.

• The player loses about 90 cents per play.

• The player wins about 90 cents per play.

Tags

PS.SPMD.4