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Mathematics, 28.01.2020 03:31 zmerriweather167

On any given day, the probability that a large local river is polluted by carbon tetrachloride is 0.12. each day, a test is conducted to determine whether the river is polluted by carbon tetrachloride. this test has proved correct 84 percent of the time.1. what proportion of days does the test indicate carbon tetrachloride pollution? 2. suppose that on a particular day the test indicated carbon tetrachloride pollution what is the probability that such pollution actually exists? 3. what percentage of days where the test is negative will the river actually be polluted?

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On any given day, the probability that a large local river is polluted by carbon tetrachloride is 0....

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