Mutually Exclusive Events

Which of the following best describes mutually exclusive events?

• Events that can occur at the same time.

• Events that cannot occur at the same time.

• Events that are independent of each other.

• Events that have the same probability.

• None of these.

Which of the following is the Addition Rule for probabilities of two events A and B?

In a deck of 52 cards, what is the probability of drawing either a heart or a club?

Which of the following statements is true about complementary events?

• They are always mutually exclusive.

• They can occur at the same time.

• Their probabilities add up to 1.

• They are independent.

• None of these.

1. What equation do you use when the events are not mutually exclusive?

• 1. P (A or B) = P (AB) - P (A+B)

• 1. P (A or B) = P (A) + P (B)

• 1. P (A or B) = P (A) + P (B) - P (A and B)

• 1. P (A or B) = P (A) - P (B)

• 1. P (A and B) = P (A) + P (B)

If you draw one card from a standard deck, what is the probability of drawing a spade or a red card?

• 1/4

• 1/2

• 3/4

• Not possible
• 3/5

If you roll one die, what is the probability of getting an even number or a multiple of 3?

• 1/3
• 2/3
• 1/2
• 1/6
• 1/4