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April 24, 2014

Homework Help: statistics

Posted by Anonymous on Tuesday, October 30, 2012 at 11:09am.

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)

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