Bell Work

Monday Tuesday Wednesday Thursday Friday

Chocolate Blueberry Poppy Seed Cranberry Chocolate

Spice Apple Banana Blueberry Poppy Seed

Pumpkin Chocolate Cranberry Spice Blueberry

Poppy Seed Banana Apple Cranberry Pumpkin

Blueberry Spice Poppy Seed Banana Cranberry

Patty has a muffin for breakfast everyday before school. The table below lists the different flavors she had for the entire month of March. What percentage of the muffins Patty ate were chocolate?

Total number of muffins = 25

Number of chocolate muffins = 3 ¿0.12=12%

Chance Experiments

Vocabulary• Chance experiment - situation whose ultimate outcome is

uncertain.

• Sample Space- all possible outcomes

• Outcome- each possibility

Example: You flip a coin and it lands on heads

Chance Experiment: Flipping a coin

Sample Space: heads, tails

Outcome: heads

• Probability – the measure of how likely it is that an event will happen as the result of the chance experiment

Determine the experiment, sample space, and outcomes for the following situations. • Situation 1: You draw a green cube from a bag that has red,

blue, yellow, and green cubes.

Chance Experiment:

Sample Space:

Outcome:

• Situation 2: Your name is drawn from a raffle that 30 people entered.

Chance Experiment:

Sample Space:

Outcome:

Drawing a cube from a bag

Raffle drawing

Green cube

Red, blue, yellow, green

Names of people in the raffle (30 names)

Your name

Calculating Probability• Probability of an event E is denoted P(E)

- Probability of a coin landing on heads: P(heads)

• A probability is indicated by a number between and .

• Some events are certain to happen, while others are impossible. In most cases, the probability of an event happening is somewhere between certain and impossible.

Probability Scale

1 1/2 0

Probability Scale

Impossible Unlikely Equally Likely toOccur or Not Occur

Likely Certain

• A probability of 0, or 0%, means the event has no chance of

happening.

• A probability of 1/2 , or 50%, means the event is just as likely to happen as not to happen.

• A probability of 1, or 100%, means the event is certain to

happen.

Can you think of some examples of these different probabilities happening?

A. Your full name will be drawn when a full name is selected randomly from a bag containing the full names of all of the students in your class.

B. You will see a live dinosaur on the way home from school today.

C. A solid rock dropped in the water will sink.

D. A round disk with one side red and the other side yellow will land yellow side up when flipped.

E. A spinner with four equal parts numbered – will land on the on the next spin.

F. A red cube will be drawn when a cube is selected from a bag that has five blue cubes and five red cubes.

G. Tomorrow the temperature outside will be degrees.

Impossible Unlikely Likely to Occur Half of

the Time

Likely Certain

Practice