Probability Concepts and Models

The video tutorial explains probability models using a basketball free-throw example, discussing the criteria for a valid model, such as non-negative probabilities and a total sum of 100%. It then constructs a probability model using a fictional alien scenario, demonstrating how to calculate probabilities for different outcomes.

What is the probability of Anthony Denoon making exactly one free-throw?

• 0.2

• 0.1

• 0.5

• 0.8

What is the probability of missing both free-throws in Anthony's model?

• 0.2

• 0.1

• 0.5

• 0.8

Which of the following is a requirement for a valid probability model?

• Probabilities must sum to 50%

• Probabilities can be negative

• Probabilities must sum to 100%

• Probabilities must be greater than 1

Which of the following is NOT a valid probability for a scenario?

• 0.5

• 0.1

• -0.1

• 0.2

What is the sum of probabilities in Anthony's free-throw model?

• 0.8

• 1.0

• 1.1

• 0.9

In the space alien example, how many chickens were abducted?

• 97

• 221

• 77

• 47

What is the probability of selecting a cow in the space alien example?

• 97/221

• 77/221

• 47/221

• 221/221

How many total earth creatures were abducted by the space alien?

• 221

• 97

• 47

• 77

What is the probability of selecting a human in the space alien example?

• 1/221

• 77/221

• 47/221

• 97/221

What is the denominator when calculating the probability of selecting any earth creature?

• 97

• 221

• 47

• 77