Probability and Complementary Events

In the clothing store, the probability of randomly selecting a jacket is 34%. What's the probability of its complement?

• P(not jacket)= 56%

• P(jacket) = 66%

• P(not jacket) = 50%

• P(not jacket) = 66%

Tags

CCSS.7.SP.C.5

The probability of an event is 8/9. What's the probability of the complement to this event?

• 1/9

• 1

• 2/9

• 8/9

Tags

CCSS.7.SP.C.5

What's the probability of the complement of spinning on black as a fraction?

• 1/4

• 7/8

• 8/8

• 1/8

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

What's the complement of drawing a blue marble written as a percent?

• 33.3%

• 66.67%

• 8/12

• 80%

In a bag of student names, the probability of drawing a name that starts with a vowel is 16%. What's the probability of the complement of drawing a name that starts with a vowel?

• 16%

• 50%

• 84%

• 100%

The complement of rolling a 3 is:

• Rolling an odd number

• Not rolling a 3

• Rolling an even number

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

The chance of rolling a 2 is 1/6. What is the chance of not rolling a 2?

• 2/6

• 1/6

• 5/6

• Not possible

Tags

CCSS.7.SP.C.5

What is the sum of P(event) and its complement?

• 0
• 1
• 0.5
• None of these

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

• 100%
• 50%
• 30%
• 10%

If you roll a die numbered from 1 to 6, what is the probability that will NOT roll an even number?

• 1/3
• 1/6
• 1/2
• None of these