Probability Dependent

Hana buys a pack of bubble gum that has 3 orange, 6 pink, 1 yellow, and 5 red gums.  She puts the gums in the bowl.  If she reaches in and grabs two gums without putting one back, what is the probability that she will pick a pink and then a yellow?

• 1/35

• 7/210

• 6/225

• 2/75

What is the probability of drawing a 2, then drawing another 2? (no replacement--dependent event)

• 2/8 = 1/4

• 2/56 = 1/28

• 1/7

• 3/7

What is the probability of drawing a 9, then drawing a number divisible by 1? (no replacement--dependent event)

• 8/56 = 1/7

• 1/8

• 8/7

• 2/9

What is a sample space?

• The answer to a probability problem.

• The area or perimeter of a probability.

• The total number of different results (or outcomes) you could get from an experiment.

• A probability that is always written as a percent.

Two dice are rolled and it is recorded whether the result on each is odd or even. What is the probability both are odd?

• 1/4

• 1/2

• 2/4

• 3/4

The tree diagram shows the outcomes of rolling a die and flipping a coin.  
What is the probability of rolling an even number and flipping a head?

• ³/₁₂

• ¹/₂

• ⁴/₁₂

• ⁰/₁₂

What is the probability of picking a green marble, keeping it, then picking another green marble?

What is the probability of choosing a red marble then not replacing and then choosing a green marble?

An event is DEPENDENT, if...

• The first event has no affect on the next event

• The first event affects the second event

Is the event INDEPENDENT or DEPENDENT?

Amy plays card games. She picks a card at random. Then without putting the first card back, he picks a second card at random.

• Independent

• Dependent