Probability Prior Knowledge

Probability is ...

• the chance that some event will occur.
• a game that involves coins.
• a guarantee.

Probability can be written as ...

• a fraction
• a decimal
• a percent
• all of the above

A likely chance event is closer to what number?

• 0
• 1
• .5
• 100

An unlikely chance event is closer to what number?

• 0
• 1
• 2
• 3

What is the probability of spinning the spinner and having it land on RED?

• 33%
• 50%
• 12%

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

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

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 5/11
• 5/6
• 1/3
• 5

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a nickle?

• 5/11

• 0/11

• 1/3

• 5

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%
• 70%
• 100%
• 0%

What is the probability of spinning an even number?

• 16 2/3%

• 33 1/3%

• 50%

• 75%