Probability: Addition Rule & Conditional

When rolling a single die, the events of rolling an even and an odd number are mutually exclusive.

• True

• False

If a spinner is numbered 1 – 8, when you spin it the events of spinning an even number and a number less than 4 are mutually exclusive.

• True

• False

P(Sandal U Pants):

• 7/10

• 1/6

• 1/9

• 5/6

A single 6-sided die is rolled. What is the probability of rolling a 2 or a 5?

• 1/3

• 2/3

• 1/2

• None of the above

The probability of a New York teenager owning a skateboard is 0.37, of owning a bicycle is 0.81 and of owning both is 0.36. If a New York teenager is chosen at random, what is the probability that the teenager owns a skateboard or a bicycle?

• 1.18

• 0.7

• 0.82

• None of the above

Consider the following table with information about all of the students taking Statistics at Happy High School.

Find P( Full-time | Male)

• 7/3

• 3/10

• 3/7

• 4/7

If P(A) = 0.24, P(B) = 0.41, and P(A and B) = 0.18, what is P(A or B)?

• 0.17

• 0.47

• 0.59

• 0.65

Use the Venn Diagram to find  $P\left(A\cup B\right)$  

• 39/50

• 24/31

• 3/4

• 12/25

Consider the following table with information about all of the students taking Statistics at Happy High School.

Find P( Female | Part-time) =

• 15/31

• 43/71

• 31/43

• 15/43

When rolling a single die, the events of rolling an even number and rolling a ‘5’ are mutually exclusive.

• True

• False