Spiral Review – Do Now

1. Write each ratio in simplest form:

a. b.

Vocabulary

Probability ExperimentOutcomeEvent

Probability

Objective:

To find the probability of an event.

P(event)=

Probability

P(event)=

1. P(Heads)=

2. P(Tails)=

What if I tossed the coin ten times? Would that change the results?Does it matter how many times you toss the coin?

Event: tossing a die

Die: How many possible outcomes?

What is the probability oftossing a 4?What is the probability of tossing a number less than3?What is the probability oftossing an odd number?,

Dice

When tossing two dice what is the probability of getting

ProbabilityHokie Pokie

1. What is the probability

of landing on red?2. What is the probability

of landing on blue?3. What is the probability

of landing on your right hand?

4. What is the probability of landing on your left or right foot?

PracticeHow many cards are in a standard deck of playing cards?

What is the probability of drawing a red card?

What is the probability of drawing a royalty card?

What is the probability of drawing a red or black card?

What is the probability of drawing a green card?

Deck of

Cards

Probability

Marbles

Mrs. Weir has a bag of marbles. It has 14 red, 16 green and 12 blue. What is the probability of you choosing a red marble?

Mrs. Diehl has a bag of marbles. Her bag has

6 cat’s eyes, 4 tiger’s eye, and 12 yellow marbles. What is the probability of you drawing a cat’s eye?

Closure

1. How do you find the probability of an event?

2. How do people use probability in their everyday lives?