Conditional Probability Venn Diagram

How many senior boys play football and wrestle?

Mathematical Equivalence

ON

How many senior boys play football but do not wrestle?

Mathematical Equivalence

ON

How many senior boys play football AND wrestle?

• 9

• 12

• 18

• 39

Identify the shaded area...

• A

• B

• A'

• B'

Identify the shaded area...

• A

• B

• A'

• B'

How many senior boys play neither sport?

• 9

• 104

• 30

• 39

What is the probability that they speak French given that they are a girl? 

• 2.14

• 24

• 4

• 8571

What percentage of the days that it rained, did they forecast no rain?

• About 20%

• About 18%

• About 14%

• About 12%

Identify the shaded area...

• A∩B

• A∪B

• A'∩B'

• A'∪B'

Calculate P(L|S)

• 7/25

• 47/50

• 7/12

• 14/37