Mathematics

Problem

Let

P(A)=0.4

P(B)=0.5

and

P(A\cap B)=0.2

. Which statement about the independence of

A

and

B

is correct? a) Not independent, because independent events must have

P(A\cap B)=0

b) Not independent, because

0.4\times0.5=0.45\neq0.2

c) Independent, because

0.4\times0.5=0.2

d) Cannot be decided from the given data