14.Probability Quiz

What is an event in probability?

• A compound event

• A single sample point

• A complementary event

• A subset of a sample space

Which of the following is an impossible event?

• Sample space S

• Rolling a 6 on a fair die

• Empty set ∅

• Getting heads when flipping a coin

What is a simple event in probability?

• An event with more than one sample point

• An event with only one sample point

• An event that is not A

• An event that is not B

What is the complementary event to A in probability?

• P(A ∪ B)

• P(not A)

• P(A and B)

• P(A or B)

In the experiment of rolling a die, what is the sample space?

• {2,4,6}

• {1,3,5}

• {1,2,3,4}

• {1,2,3,4,5,6}

What is the formula for P(A or B) in terms of P(A) and P(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 formula for P(A ∪ B) in terms of P(A) and P(B)?

• P(A) - P(B) - P(A ∩ B)

• P(A) + P(B) – P(A ∩ B)

• P(A) + P(B)

• P(A) - P(B) + P(A ∩ B)

What is the formula for P(not A) in terms of P(A)?

• P(A) / 1

• P(A) + 1

• 1 – P(A)

• P(A) - 1

In the experiment of rolling a die, what are the mutually exclusive events A and B?

• A ‘rolling a 3’ and B ‘rolling a 4’

• A ‘rolling a 1’ and B ‘rolling a 2’

• A ‘rolling a 5’ and B ‘rolling a 6’

• A ‘rolling a 1’ and B ‘rolling a 3’

What is the event A’ called in probability?

• Event A or B

• Event ‘not A’

• Complementary event to A

• Event A and B