2. Andrew found that if he plays
video games, then the probability he
will connect with his friends is 0.3.
If he does not play video games, the
probability that he will connect with
his friends is 0.9. The probability
that Andrew plays video games is
0.4.
a. What is the probability that
Andrew will connect with friends?
tb. Given that Andrew connected
with his friends, what is the
probability that Andrew did not
play video games?