Probability

What is the probability of spinning green?

• 0
• 1/4
• 1/2
• 3/4

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

• Dependent
• Independent

How do you write 0.02 as a percent?

• 20%
• 200%
• 2%
• .02%

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

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

What is the probability of selecting an orange candy?

• 0%
• 25%
• 50%
• 100%

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

• 1/14

• 1/2

• 0

• 1/7

What is the probability that a randomly selected student prefers athletics given that the student prefers math? Leave as a fraction.