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The contingency table below shows some hypothetical probabilities for the propor

ID: 3055660 • Letter: T

Question

The contingency table below shows some hypothetical probabilities for the proportions of renters and owners who evacuate or don’t evacuate when a hurricane evacuation order is issued.

Evacuate

YES

NO

Renter

0.24

0.16

0.40

Owner

0.12

0.48

0.60

0.36

0.64

1.00

               

What is the probability that you will evacuate if you are a renter?              _______

What is the probability that you won’t evacuate if you are an owner?      _______

Evacuate

YES

NO

Renter

0.24

0.16

0.40

Owner

0.12

0.48

0.60

0.36

0.64

1.00

Explanation / Answer

(a)

Let A = Evacuate

B = Renter

Then:
A/B = you will vacate if you are a renter

AB = Renter & Evacuate

By Multiplication Theorem:
P(A/B) = P(AB) /P(B)

           = 0.24/0.40 = 0.60

(b)

Let

A = Won't vacale

B = Owner

A/B = You won't vacate if you are an owner

AB = Won't vacate & Owner

By Multiplication Theorem:
P(A/B) = P(AB)/P(B)

             = 0.48/0.60 = 0.80

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