Chance Events

What is the probability of spinning red?

• 0

• 5/12

• 1/2

• 3/4

Probability is ...

• the chance that some event will occur.

• a game that involves coins.

• a guarantee.

What is the probability of selecting a grape piece?

• 3 out of 3

• 3 out of 9

• 3 out of 12

• 4 out of 12

What is the probability of flipping a coin and getting heads?

• 1/2

• 1/3

• 1/4

• Never, Tails never fails.

What is the complement to: rolling an even number

• Not rolling an even number (rolling an odd number)

• rolling a 2,4,6

• Rolling a number less than 4

• Not possible

If there is a 70% chance of rain, what is the probability that it will NOT rain?

What do the probabilities of complementary events add up to?

The probability of event A is 0.3. What is the probability of event A'?

Pr⁡(A) + Pr⁡(A′) = 1

• True

• False