In Salem, 82% of the households have cable television and Internet access and 90% of the houses have cable television. What is the probability that a house has Internet access given that it has cable television?
The formula for conditional probability is: \(P(A|B)=\frac{P(A\cap B)}{P(B)}\) \(P(I|C)=\frac{P(I\cap C)}{P(C)}=\frac{0.82}{0.90}=0.91\) The correct answer choice is therefore D) 91%
