7. Suppose that the ages of 30% of the teachers of a country are over 50, 20%...
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7. Suppose that the ages of 30% of the teachers of a country are over 50, 20% are between 40 and 50, and 50% are below 40. In a random committee of 10 teachers from this country, two are above 50.What is the probability mass function of those who are below 40?
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Related Book For 
Fundamentals Of Probability With Stochastic Processes
ISBN: 9780429856273
4th Edition
Authors: Saeed Ghahramani
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