Please show me steps so I can understand results. Thank you.

Based on data from theStatistical Abstract of the United States, 112th Edition, only about20%of senior citizens (65 years old or older) get the flu each year. However, about22%of the people under 65 years old get the flu each year. In the general population, there are11.5%senior citizens (65 years old or older).

(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? (Use 3 decimal places.) ______________.

(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? (Use 3 decimal places.)__________________.

(c) Answer parts (a) and (b) for a community that has88%senior citizens. (Use 3 decimal places.)

(c.1.)_________

(c.2.)_________

(d) Answer parts (a) and (b) for a community that has55%senior citizens. (Use 3 decimal places.)

(d.1.)__________

(d.2.)__________