Theoretical Probability

What is the probability of drawing a red marble written as a decimal?

• 0.5

• 6/12

• 50.0

• 0.6

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

• 100%
• 50%
• 30%
• 10%

What is the probability of NOT drawing a blue marble written as a percent?

• 33.3%

• 66.67%

• 8/12

• 80%

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

Use the spinner to determine the theoretical probability of the event.

Spinning a 7

Use the spinner to determine the theoretical probability of the event.

Spinning a number less than 3

• $\frac{1}{4}$

• $\frac{3}{8}$

• $\frac{2}{8}$

• $\frac{1}{8}$

You spin the spinner. How many possible outcomes are there?

• 4
• 8
• 1
• 6

An experiment consists of rolling a fair number dice. Find the theoretical probability of rolling a number greater than 3.

• 4, 5, and 6
• 3/6
• 3
• 1/2

You have a jar with the following marbles: 4 blue, 8 red, 2 green

You randomly choose one marble from the jar. Find the theoretical probability of choosing one red marble.

• $\frac{4}{7}$

• $\frac{8}{14}$

• $\frac{4}{3}$

• $\frac{8}{11}$

In a cup are the numbers 1 - 20. Find the theoretical probability of 
picking a number divisible by 5. 

• 4/20
• 1/5
• 5/20
• 1/4