Venn diagrams

Question 1

Venn diagams: formulas for when a and b are mutually exclusive

Answer 1

P(A ∩ B) = 0
P(A ∪ B) = P(A) + P(B)

Question 2

Venn diagams: formulas for when a and b are independent

Answer 2

P(A ∩ B) = P(A) x P(B)
P(A|B) = P(A)

Question 3

Venn diagams: conditional probability equation

P(A|B) = ?

Answer 3

P(A|B) = P(A ∩ B) / P(B)

Question 4

Venn diagrams: addition law

P(A ∪ B) = ?

Answer 4

P(A ∪ B) = P(A) + P(B) - P(A ∩ B)