Quiz - Probability

What probability is the same as impossible?

• 0

• ¹/₂

• 1

• 0.1

What probability is the same as certain?

• 0

• ¹/₂

• 1

• 0.1

If a counter is selected at random from this bag, what is P(yellow)?

• ²/₃

• ²/₅

• ³/₅

• ¹/₅

What is the probability the spinner stops on yellow?

• .05

• 50%

• 25%

• 3/8

What is the probability that a student plays an instrument 

• .55
• .5
• .45
• .4

On this spinner, what is P(not B)?

• ³/₈

• ³/₄

• ¹/₄

• ⁵/₈

There are 130 students in a school, 25 freshman, 30 sophomores, 45 juniors, and 30 seniors. What is the probability a students pulled to the office is a junior or a freshman? Simplify the fraction

The weather forecaster predicted it will be 4/5 chance of rain for Monday and 2/3 chance of rain for Tuesday. What is the probability it will rain both days?

• 1/2

• 20/15

• 8/15

• 6/8

The chart below represents the number of marbles in a jar.

P(not green) =

• 28/38

• 10/38

• 14/19

• 80%

A bag of marbles contains 6 blue, 4 green, 2 red, and 4 yellow marbles. What is the probability of pulling a yellow marble and a red marble (without replacement)? Simplify the fraction