Answer
No. Because we need to know the probability of the event "a citizen of the United States who has hearing problems and vision problems", i.e., P(hearing problems and vision problems).
Work Step by Step
Possibily, the events "a citzen of the United States who has vision problems" and "a citizen of the United States who has hearing problems" are not mutually exclusives. Then, we need to know the probability of the event "a citizen of the United States who has hearing problems and vision problems", i.e., P(hearing problems and vision problems). So, we would compute:
P(hearing problems or vision problems) = P(hearing problems) + P(vision problems) - P(hearing problems and vision problems).
