Marketing and Consumer Behavior Because wireless technology has become reliable and prevalent, many people are terminating their landline service. According to a survey by the Centers for Disease Control and Prevention, 35.8% of households have wireless phones only. In addition, 52.5% have a landline with wireless, 9.4% have a landline without wireless, 0.2% have a landline with unknown wireless, and 2.1% are phoneless.
Suppose the survey indicated that 22.2% were wireless-only users and in excellent health, 9.3% were wireless-only users and in adequate health, and 4.3% were wireless-only users and in poor health. Suppose a person who completed the survey is selected at random.
a. Suppose the person is a wireless-only user. What is the probability that she is in excellent health?
b. Suppose the person is a wireless-only user. What is the probability that she is in poor health?
c. Suppose the person is a wireless-only user. What is the probability that he is not in poor health?