Complimentary Probability

If the probability of rain on a given day is 0.3, what is the probability of no rain on that day?

• 0.7

• 0.3

• 1.0

• 0.5

If the probability of winning a raffle is 0.2, what is the probability of not winning?

• 0.8

• 1.2

• 0.3

• 0.5

If the probability of a basketball team winning a game is 0.7, what is the probability of losing?

• 0.3

• 0.2

• 0.5

• 0.8

If the probability of a student passing a test is 0.8, what is the probability of failing?

• 0.3

• 0.9

• 0.2

• 0.5

Event A has a probability of 0.3. What is the probability of the complement of Event A?

• 30%

• 3/100

• 7/100

• 0.7

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%

• 70%

• 100%

• 0%

If 33% of the students at Harnett Central have a pet, then what is the probability of the complement of this event?

• 33%

• 77%

• 67%

• 50%

​ (a)   are two events that together contain all of the outcomes in the sample space.

• equally likely

• simple event

• Experiment

• outcome

• Complementary Events

• probability

Find P (not A)

Mathematical Equivalence

ON

If the probability of a light bulb lasting more than a year is 0.6, what is the probability of it not lasting more than a year?

• 0.2

• 0.8

• 1.0

• 0.4