Unit 5 Lesson 1 Simple Probability & Its Complement

Front

What is the complement of an event?

Back

The complement of an event is the probability that the event does not occur.

Front

If there are 8 red marbles in a jar of 15, what is the probability of not choosing a red marble?

Back

P' = 7/15

Front

What is the probability of rolling a 7 on a single die?

Back

0

Front

What is the probability of spinning green or blue if there are 5 green and 7 blue out of 24 total?

Back

1/2

Front

How likely are you to NOT roll a 1 on a regular die?

Back

P' = 5/6

Front

What is the probability of selecting a brown M&M if there are 2 brown out of 20 total?

Back

1/10

Front

Define probability.

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is the formula for calculating the probability of an event?

Back

P(Event) = Number of favorable outcomes / Total number of outcomes.

Front

If a die has 6 sides, what is the probability of rolling an even number?

Back

P(even) = 3/6 = 1/2.

Front

What does it mean if the probability of an event is 1?

Back

It means the event is certain to occur.