Complements, Intersections, and Unions

label Statistics
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Sep 29th, 2015

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a) P(respond) = # respond/Total = 860/10,000 = 0.086

b) P(not respond) = # not respond/Total = 9140/10,000 = 0.914

c) P(>21 years) = # >21/Total = 4,500/10,000 = 0.45

d) P(>21 years and responded) = # >21 and respond/Total = 300/10,000 = 0.03


Total alumni = 10,000

Adjoining Rows and Columns:

Total Positive = 860

Total None = 9140

Total 0-5 = 1500

Total 6-20 = 4000

Total 21-35 = 3500

Total Over 35 = 1000

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Sep 29th, 2015

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