A survey found that 73% of Americans have a home phone, 83% have a cell phone and

Question:

A survey found that 73% of Americans have a home phone, 83% have a cell phone and 58% of people have both.
a) If a person has a home phone, what's the probability that they have a cell phone also?
b) Are having a home phone and a cell phone independent events? Explain.
c) Are having a home phone and a cell phone mutually exclusive? Explain.