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[Civilization]

22/ch4- A group consisting of 4 numbers is to be formed from 20 even numbers and 5 odd numbers. Find the probability that the group will consist of even number only. A) 0.150 B)0.791 C) 0.383 D) 0.451 Solution: C) 0.383 Yes No No opinion Total Males 25 15 10 50 Females 30 10 10 50 Total 55 25 20 100

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