Step 1 :The problem is asking for the conditional probability of a woman owning a Brand B smartphone. The formula for conditional probability is \(P(A|B) = \frac{P(A \cap B)}{P(B)}\). In this case, A is the event of owning a Brand B smartphone and B is the event of being a woman.
Step 2 :\(P(A \cap B)\) is the probability of both A and B occurring, which is the number of women who own a Brand B smartphone divided by the total number of people. From the table, we can see that the number of women who own a Brand B smartphone is 15.
Step 3 :\(P(B)\) is the probability of being a woman, which is the number of women divided by the total number of people. From the table, we can see that the total number of women is 65.
Step 4 :Substitute these values into the formula, we get \(P(A|B) = \frac{15}{65} = 0.23076923076923078\).
Step 5 :Rounding to four decimal places, the probability of a woman owning a Brand B smartphone is approximately 0.2308.
Step 6 :Final Answer: \(\boxed{0.2308}\)