Probability Dependent Events

Find the probability if you pick a card, do not replace it, then pick another card.

p(black, then white)

• 15/56

• 5/14

• 3/28

Find the probability if you pick a card, do not replace it, then pick another card.

p(white, then white)

• 15/56

• 5/14

• 3/28

Find the probability if you pick a card, do not replace it, then pick another card.

p(white, then black)

• 15/56

• 5/14

• 3/28

Each letter of the word Banana is written on a card. Find each probability if you pick two cards without replacing the first.

• 2/30

• 6/30

• 3/30

• 0

Each letter of the word Banana is written on a card. Find each probability if you pick two cards without replacing the first.

p(A, then N)

• 2/30

• 6/30

• 3/30

• 0

A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced. Find P(white, then purple, then black)

• 1/36

• 2/39

• 5/41

• 6/43

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

Sue will randomly select from a treat bag containing 6 lollipops and 4 gum balls. Sue will select a treat, not replace it, and then select a second treat.

• Independent

• Dependent

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement. Find P(both marbles are purple)

• 2/9

• 1/3

• 1/2

• 1/4