Chapter 5 Test: Probability

Front

When does P(A or B) = P(A) + P(B)?

Back

When A and B are independent events.

Front

The likelihood of an event happening is _________.

Back

probability.

Front

What is the probability of choosing a letter other than 'A' from the word 'ALGEBRA'?

Back

5/7.

Front

According to the two-way table, a person who plays an instrument is most likely to:

Back

Play a team sport.

Front

What is P(Pizza|Senior)?

Back

10/15.

Front

Define probability.

Back

Probability is a measure of the likelihood that an event will occur.

Front

What is the formula for the probability of independent events A and B?

Back

P(A and B) = P(A) * P(B).

Front

What is the probability of an event that is certain to happen?

Back

1 (or 100%).

Front

What is the probability of an impossible event?

Back

0 (or 0%).

Front

If two events are dependent, how do you calculate P(A and B)?

Back

P(A and B) = P(A) * P(B|A).