Probability

Question 1

What does P(A or B) represent on a venn diagram?

Answer 1

Everything inside P(A and B), P(A but not B) and P(B but not A)

Question 2

Define mutually exclude events (for Venn diagrams), what does this look like on a Venn diagram and give the equation for a mutually exclusive event:

Answer 2

When events have no outcomes in common.
Closed curves do not overlap.
P(A or B)= P(A) + P(B)

Question 3

Define independent events (for Venn diagrams), apply this to the example of A and B and give the equation for an independent event:

Answer 3

When one event has no effect on another.
Probability of A happening is the same whether or not B happens.
P(A and B)= P(A) X P(B)

Question 4

How do you find out probability of P(a or b) on a Venn diagram?

Answer 4

P(A or B)= what is only in A + what is in A and B + what is only in B.