Question

Consider the following contingency table. 20 12 AC S0 a. Convert the contingency table into a joint probability table. (Round intermediate calculations to at least 4 declmal places and final answer to 4 decimal places.) Tota AC Total b. What is the probability that A occurs? (Round intermediate calculations to at least 4 decimal places and final answer to 4 decimal places.) c. What is the probability that A and B occur? (Round intermediate calculations to at least 4 decimal places and final answer to 4 decimal places.) Probability

Answer 1

dividing each cell with 100;

a)

	B	Bc	total
A	0.2	0.12	0.32
Ac	0.5	0.18	0.68
total	0.7	0.3	1

b)

probability =0.32

c)

probability =0.2

d)

probability =20/70=0.2857

e)

probability =50/68=0.7353