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Front

What is the difference between independent and dependent events in probability?

Back

Independent events are those whose outcomes do not affect each other. Dependent events are those where the outcome of one event affects the outcome of another.

Front

If Sue selects a treat from a bag without replacement, what type of event is this?

Back

Dependent event.

Front

If Tom selects a treat from a bag with replacement, what type of event is this?

Back

Independent event.

Front

What is the probability of getting heads when flipping a fair coin?

Back

1/2.

Front

What is the probability of getting two heads when flipping two fair coins?

Back

1/4.

Front

How do you calculate the probability of two independent events occurring?

Back

Multiply the probabilities of each event.

Front

How do you calculate the probability of two dependent events occurring?

Back

Multiply the probability of the first event by the probability of the second event given that the first has occurred.

Front

What is the total number of treats in Sue's bag?

Back

10 (6 lollipops + 4 gum balls).

Front

What is the probability of selecting a red pen from a box containing 3 black pens, 7 blue pens, and 5 red pens?

Back

5/15 or 1/3.

Front

What is the probability of selecting a red pen and then a black pen without replacement?

Back

(5/15) * (3/14) = 15/210 = 1/14.