each sample of water has a 10% chance of containing a particular organic pollutant. assume that the samples are independent with regard to the presence of the pollutant. Find the probability that in the next 18 samples, exactly 2 contains the pollutant. (a) P(x

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each sample of water has a 10% chance of containing a particular organic pollutant. assume that the samples are independent with regard to the presence of the pollutant. Find the probability that in the next 18 samples, exactly 2 contains the pollutant. (a) P(x

\geq

4) (b) P(x

\leq

4) (c) P(3

\leq

x

\leq

7)

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