Probability or And Then

What is the probability of spinning green?

• 0

• 1/4

• 1/2

• 3/4

A bag contains 9 green marbles, 5 yellow marbles and 6 red marbles.  You choose one marble.   What is the probability of selecting a green or red marble?  Do you add or multiply probabilities?

• Add

• Multiply

If you roll one die, what is the probability of getting an odd number or a 4?  Are the events inclusive or mutually exclusive?

• Not Mutually Exclusive 

• Mutually exclusive

What is the probability of selecting an orange candy?

• 0%

• 25%

• 50%

• 100%

What is the probability that a randomly selected student wants to be a therapist given that the student has a fear of snakes? Leave as a fraction.

Clara picks a marble at random, puts it back, and then picks another marble at random.

• Dependent

• Independent

Two events are mutually exclusive if:

• they cannot happen at the same time

• they can happen at the same time

• they always happen 

• they never happen 

A bag contains some red-colored and some blue-colored marbles. First a red-colored marble is drawn and then, without replacing the first marble, a blue-colored marble is drawn. Are the two events dependent or independent?

• Independent

• Dependent

A coin is tossed and a number cube is rolled. Find the probability, P(heads and 7).

• 1/14

• 1/2

• 0

• 1/7

Identify if the events are independent or dependent, then calculate the probability. Leave as a fraction.