Question 370256
According to the bureau of the census, the following statistics describe the number (in thousand) of young adults living at homr or in a dormitory in the year 2004.

ages 18-24    ages 25-34
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male 7922      2543
female 5779    995

choose one student at random. Find the probability that the student is 
a. a female student aged 25-34::: 995/17239
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b. Male or aged 18-24:::(7922+5779 + 7922+2543 - 7922)/17239
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c. Under 25 years if age and not male:::: 5779/17239
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Cheers,
Stan H.