Posted by Anonymous on .
Based on data from a statistical abstract, only about 12% of senior citizens (65 years old or older) get the flu each year. However, about 24% of the people under 65 years old get the flu each year. In the general population, there are 15% senior citizens (65 years old or older). (Round your answers to three decimal places.)
(a) What is the probability that a person selected at random from the general population is senior citizen who will get the flu this season?
1
(b) What is the probability that a person selected at random from the general population is a person under age 65 who will get the flu this year?
2
(c) Repeat parts (a) and (b) for a community that has 90% senior citizens.
(a)
(b)
(d) Repeat parts (a) and (b) for a community that has 45% senior citizens.
(a)
(b)

statistics 
PsyDAG,
a. The probability of being a senior citizen = .15. The probability of a senior citizen getting the flu = .12.
The probability of both/all events occurring is found by multiplying the individual probabilities.
Use the same process for the remaining problems.