Dependent Events

Independent or Dependent?

Drawing a 7 out of a deck of cards, keeping it, and drawing a jack.

• Independent Event

• Dependent Event

Independent or Dependent?

The outcome of one event does affect the outcome of the other event.

• Independent event

• Dependent event

Pr(Black, then white)

• 3/28

• 5/14

• 15/56

Pr(Black, then black)

• 3/28

• 5/14

• 15/56

Find Pr(B and then N)

• 1/15

• 1/5

• 1/10

• 0

Find Pr(B, then B)

• 1/15

• 1/5

• 1/10

• 0

Find Pr(Green, then not green)

• 1/15

• 5/18

• 7/36

• 0

What is the probability of drawing a 9, then drawing another 9?

• 1/8

• 1/2

• 0

• 2/9

Select all independent events.

• A spinner with 4 sections is spun and a coin is flipped.

• Two six-sided number cubes are rolled.

• A card is drawn, not replaced, and then a second card is drawn.

• A piece of candy is chosen, eaten, and then a second piece is chosen.

• A card is drawn, put back, and then a second card is chosen.

The outcome of one event does not influence the outcome of the other event

• independent event
• tree diagram
• simple event
• odds