Overlapping Probability

How many sections have either green or 1 or both?

• 1

• 2

• 3

• 4

How many sections have either blue or 1 or both?

N(blue or 1)=

• 1

• 2

• 3

• 4

How many sections have either blue or 2 or both?

• 1

• 2

• 3

• 4

What is the probability of spinning a number greater than 7 or odd number?

• 3/10

• 5/10

• 7/10

• 9/10

Which formula do you use when two events are overlapping events?

• P(A or B) = P(A) + P(B)

• P(A or B) = P(A) + P(B) - P(both)

What is P(A or B) if P(A) = 1/4 and P(B) = 1/2, where A and B are overlapping events and P(a and B) = 1/8?

• 1/7

• 1/12

• 5/8

• 1/2

Intersection of A and B" and "P(A & B)" mean...

• P(A) + P(B)

• 1- P(A)

What is the probability of drawing a king or a heart from a standard deck of 52 cards?

Make a two-way table to help you solve this problem. 300 people order lunch in the cafeteria. 100 people ordered sandwiches over hamburgers. 60 people ordered a hamburger AND a soda. 180 people order water. What is the probability of someone ordering a soda?

• 40/300

• 120/300

• 60/300

• 60/120

What is the probability that a student plays an instrument or does NOT play a sport?

• 0.6

• 0.9

• 0.5

• 0.45