Probability Revision

If someone said to you "there's an outside chance it will rain today" this means that:

• It is certain to rain

• It is impossible for it to rain

• It is unlikely that it is going to rain

• It is likely that it is going to rain

The probability of an event occurring is a number between 0 - 1

• True

• False

Tags

CCSS.7.SP.C.5

A letter is selected at random from the expression: Wow Jordan is actually at school today". What is the probability that the letter is a vowel?

• 12/32

• 20/32

• 3/8

• 12/30

Tags

CCSS.7.SP.C.5

What is the correct way to write down the probability of landing on a red segment?

• 3/8

• Pr (red): 3/8

• Probability = 3/8

• 3/7

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Isoa is going to select a card at random from a normal pack of 52 cards. Which of the following events is the more likely?

• An ace

• A heart

• A black 8

• A red card

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

If the probability of passing a test is 0.55, what is the probability of not passing?

• 0.40

• 0.5

• 0.45

• 0.55

Tags

CCSS.7.SP.C.5

Using the probability of Chloe being late to school as 0.3, what is the probability that she will be on time for school the next two days?

• 0.09

• 0.21

• 0.49

• 1.4

What is the probability of rolling a number less than 1 on a regular 6-sided die?

• 0

• 1

• 1/2

• 6

Tags

CCSS.7.SP.C.5

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

P(not A) = 
*Remember to simplify.*

• 6/8
• 3/4
• 2/8
• 1/4

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7