YEAR9 5.1/5.2 - Probability

A set of all possible outcomes is known as - 

• a list
• a complement
• a sample space
• an event

What is the probability of flipping a coin and getting heads?

• 1/2
• 1/3
• 1/4
• Never, Tails never fails.

Which of the following describes theoretical probability?

• Perform a situation and count the number of possibilities
• Use trials to count the number of desired outcomes
• Perform an experiment to determine the probability of an event
• Use a formula to determine the expected probability of an event

Experimental Probability is:

• What Will happen 
• What actually happens
• What should happen
• What I think Happens

How many outcomes are in the sample space for tossing one coin?

• 1

• 2

• 4

• 8

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10
• 3/9
• 1/9
• 1/3

Based on the chart, what is the experimental probability of pulling a green marble?

• 1/8

• 8/25

• 8/100

• 7/8

If 33% of the students at Warren Middle School have a pet, then what is the probability of the students who do not have a pet?

• 33%

• 77%

• 67%

• 50%

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

What is the probability of spinning red?

• 0
• 5/12
• 1/2
• 3/4