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A student is selected from a class consisting of 10 boys above 20 year
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27 Feb 2022, 12:09
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Question Stats:
50% (00:56) correct
50% (01:53) wrong based on 2 sessions
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A student is selected from a class consisting of 10 boys above 20 years of age and 5 boys under 20 years of age and 5 girls above 20 years of age and 10 girls under 20 years of age. What is the probability that a boy above 20 years age is not selected?
Re: A student is selected from a class consisting of 10 boys above 20 year
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27 Feb 2022, 12:22
2
take the probability of the event not occurring over all possibilities. So, 20 children who are not boys above the age of 20 over 30 total children. 20/30=.66667