Exclusive/Inclusive and Dependent/Independent Probability

A die is rolled.  What is the probability of rolling a 5 or a number greater than 3?

• 2/3

• 1/2

• 5/6

• 1

If you roll one die, what is the probability of getting an odd number or a 4?

• 2/3

• 1/3

• 1/2

• 1/6

Which of the following shows how to determine P(shaded number or number less than five)?

• 4/8 + 4/8 - 2/8

• 4/9 + 2/8 - 4/8

• 4/8 + 6/8 + 2/8

• 2/8 + 4/8 - 4/8

What is the probability of spinning a shade of blue?

• 1/5

• 2/5

• 3/5

• 4/6

Which formula do you use when two events are mutually exclusive?

• P(A or B) = P(A) + P(B)

• P(A or B) = P(A) + P(B) - P(both)

• P(A and B) = P(A) * P(B)

• P (A and B) = P(A) * P(B|A)

Find the probability of choosing a student at random that plays an instrument OR a sport.

• 1/2

• 13/20

• 21/20

• 4/5

A math teacher is setting a test for the class next week. The Probability that the test will be on Monday is 10%, Tuesday is 20%, Wednesday is 45% and Thursday is 15% What is the probability that the test will be on Friday?

• 15%

• 5%

• 20%

• 10%

Probability can be written as ...

• a fraction

• a decimal

• a percent

• all of the above

You pick a marble from this bag.
What is the probability you will choose either a black or white marble?

• 3/5

• 9/100

• 1/10

• 2/5

In a standard deck of 52 cards there are 13 diamonds and 13 hearts (red) and 13 spades and 13 clubs (black).  Find the probability of choosing a card at random that is a spade OR a 7

• 1/52

• 1/13

• 4/13

• 17/52