18science18 18science18

14-05-2017
Mathematics

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A survey of 500 students in a school found that about 100 households consist of only vegetarians, 240 consist of vegetarians and non-vegetarians, and 160 consist of non vegetarians.

a. What is the probability that one of the households surveyed, chosen at random, consists of vegetarians or non vegetarians?

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jorel1380 jorel1380

14-05-2017

100+160/500 consist of only vegetarians, or only non-vegetarians, which equal 260/500=13/25 probability. ☺☺☺☺

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