Probability Study Guide Quiz

What is probability defined as in the study guide?

• A number to describe how unlikely it is that an event will occur

• A number to describe how likely it is that an event will occur, can be written as a fraction, decimal, and percent

• A method to predict the exact outcome of an event

• A calculation that can only be expressed in percentages

What does a simple event consist of according to the study guide?

• Two or more outcomes

• Only one outcome

• The total number of possible outcomes

• An outcome that does not affect another event

How is theoretical probability different from experimental probability?

• Theoretical probability is based on actual recorded results, while experimental probability is based on expected results

• Theoretical probability is based on the total number of possible outcomes, while experimental probability is not

• Theoretical probability is based on expected or calculated results, while experimental probability is based on the actual recorded results of an experiment

• There is no difference; they are the same

What is the difference between an independent compound event and a dependent compound event?

• An independent compound event affects the outcome of the second event, while a dependent compound event does not

• An independent compound event consists of only one outcome, while a dependent compound event consists of two or more outcomes

• An independent compound event does not affect the outcome of the second event, while a dependent compound event does

• There is no difference; they are terms used interchangeably

According to the probability scale provided, what numerical value is associated with an event that is "Equally Likely" to occur?

• 0

• 0.25

• 0.5

• 0.75

What is the formula for calculating simple probability (P) as given in the study guide?

• P(A) = Total Number of Outcomes / Number of Favorable Outcome

• P(A) = Number of Favourable Outcomes / Total Number of Outcomes

• P(A) = Number of Unfavourable Outcomes / Total Number of Outcomes

• P(A) = Total Number of Outcomes / Number of Favourable Outcomes

What is the formula for calculating the probability of two independent events, A and B, occurring together?

• P(A and B) = P(A) + P(B)

• P(A and B) = P(A) × P(B)

• P(A and B) = P(A) / P(B)

• P(A and B) = P(A) - P(B)

What is the probability of rolling a 3 on a fair six-sided die?

• 1/3

• 1/6

• 1/2

• 1/5

If you spin a 3 section spinner labeled red, yellow, blue, and roll a 6 sided number cube, what is the probability you get a red and an even number?

• 1/18

• 1/12

• 1/6

• 1/36

What is the formula for calculating the probability of two dependent events, A and B, occurring together?

• P(A and B) = P(A) + P(B)

• P(A and B) = P(A) × P(B)

• P(A and B) = P(A) × P(B | A)

• P(A and B) = P(A) - P(B)