A probability problem by Adrian Umadhay
Probability
Level
2
In a town with a population of 5,000, 80% have their own telephone. If you conduct a study, randomly picking 150 names from the phone directory, what might be the average number of people you pick without a telephone?
The answer is 0.
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1 solution
In a telephone directory there are names of people with telephones so there will not be any name without telephone