M3: Basic Probability

Probability can be expressed as a number between_____ and _____.

• 0 and 100
• 0 and 10
• 0 and 1
• -1 and 1

Probability can be written as ...

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

EXPERIMENT

• A situation involving chance or probability that leads to results.

• The result of an experiment.

• A set of all possible outcomes.

• A set of outcomes which satisfy a given condition.

SAMPLE SPACE

• A situation involving chance or probability that leads to results.

• The result of an experiment.

• A set of all possible outcomes.

• A set of outcomes which satisfy a given condition.

What is the probability of spinning the fair 8-sided spinner and landing on the 7?

• impossible - 0 / 8

• 1 / 2

• 1 / 8

• 7 / 8

What is the probability of rolling a fair 6-sided die and having it land on an odd number?

• 3/4

• 1/3

• 1/2

• 2/5

What is the probability of rolling a sum of 15 with a pair of six-sided dice?

• 0

• 1 / 36

• 15 / 36

• 5 / 36

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

• 30%
• 70%
• 100%
• 0%

If you randomly pick from the following M & M colors from a bag, what is the probability that you choose blue?

5 green

6 yellow

8 blue

7 brown

• 8/26 or 4/13

• 7/26

• 8/25

• 1/3

Find the probability of drawing a 10 from a standard deck of 52 cards.

• 1 out of 52
• 13 out of 52
• 26 out of 52
• 4 out of 52