Introduction to Probability Review

If you choose from the following M & M colors, what is the probability that you choose blue?
5 green
6 yellow
8 blue
7 brown

• 8/26

• 4/13

• 8/25

• 1/3

The probability of an event occurring, P(A), can be expressed as a fraction, decimal, or percent.

• True

• False

An unlikely chance event is closer to what number?

• 0

• 1

• 2

• 3

The likelihood of an event happening is _________.

• percentage

• probability

• parallel

• predictions

A bag has 10 marbles: 4 red, 2 green, 2 blue, 2 yellow. If you reach in the bag and pull out one marble, what is the probability it will be a red marble?

• 4/10 or 2/5

• 2/10 or 1/5

• 10/10 or 1

• 0/10 or 0

An event has a 50% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

An event has a 0% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

An event has a 75% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

An event has a 100% chance of happening. This event is ___.

• Impossible

• Unlikely

• As likely as not

• Likely

• Certain

When figuring the probability of an event, what number goes on top of your fraction?

• The number of the desired event

• The total number of choices

• The event that happens the most

• The even that happens the least