Here is a two-way table of U.S. Census Bureau data describing the age and sex of

Question

Here is a two-way table of U.S. Census Bureau data describing the age and sex of all American students enrolled in college. The table entries are counts in thousands of students:

(a) How many college undergraduates are there? :  thousand

(b) Find the marginal distribution (±±0.01) of age group

Here is a two-way table of U.S. Census Bureau data describing the age and sex of all American students enrolled in college. The table entries are counts in thousands of students:

Age Group Female Male 18 to 24 years 6428 5639 25 to 34 years 2451 1836 35 years or older 2128 1067

(a) How many college undergraduates are there? :  thousand

(b) Find the marginal distribution (±±0.01) of age group

Age Group Percent 18 to 24 years % 25 to 34 years % 35 years or older %

Explanation / Answer

Ans:

a)

Total=19549 or 19.55 thousand

b)

For age18 -24:

=(12067/19549)*100=61.73%

For age 25-34:

=(4287/19549)*100=21.93%

For 35 or older:

=(3195/19549)*100=16.34%

Age Group Female Male Total 18 to 24 years 6428 5639 12067 25 to 34 years 2451 1836 4287 35 years or older 2128 1067 3195 Total 11007 8542 19549

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