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An environmental scientist obtains a sample of water from an irrigation canal that contains a certain type of bacteria at a concentration of 4 per

An environmental scientist obtains a sample of water from an irrigation canal that

contains a certain type of bacteria at a concentration of 4 per milliliter.

a) Is this a binomial distribution or a Poisson distribution? Explain.

b) What is the probability that there will be exactly 8 bacteria in a 3-milliliter

sample?

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