Probability and Expected Outcomes

This video tutorial covers the use of theoretical probability to make qualitative predictions. It includes examples such as matching socks, locker combinations, and cookie selection to illustrate probability calculations. The lesson concludes with a quantitative review using a raffle example to predict outcomes.

What is the main focus of theoretical probability?

• Predicting outcomes based on past experiments

• Predicting outcomes based on random guesses

• Predicting outcomes based on observable data

• Predicting outcomes based on assumptions

If Tala has already picked a green sock, what is the probability that the next sock she picks will also be green?

• 1/2

• 1/3

• 1/4

• 1/5

What is the probability that Tala picks a sock that does not match the first one?

• 1/2

• 3/4

• 1/3

• 2/3

How many students are likely to have the locker combination 1234?

• 2

• 8

• 4

• 6

What is the probability of a student receiving the combination 1234?

• 1/125

• 1/625

• 1/500

• 1/2500

Which type of cookie is Sam least likely to pick?

• Chocolate

• Oatmeal

• Toffee

• Lemon

What is the probability of picking a lemon cookie from Sam's bag?

• 1/10

• 1/5

• 1/4

• 1/2

In a raffle with 360 ticket holders, how many people are expected to win a pizza?

• 90

• 60

• 45

• 30

If 90 people win a prize in the raffle, how many are expected to win ice cream?

• 45

• 60

• 90

• 30

What fraction of the ticket holders will receive a prize in the raffle?

• 1/2

• 1/3

• 1/4

• 1/5