The mean number of bacteria per milliliter of a liquid is known to be 4. Assuming that the number of bacteria follows a

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answerhappygod
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The mean number of bacteria per milliliter of a liquid is known to be 4. Assuming that the number of bacteria follows a

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The mean number of bacteria per milliliter of a liquid is known
to be 4. Assuming that the number of bacteria follows a Poisson
distribution, find the probability that, in 1ml of liquid, there
will be
(a) no bacteria
(b) 4 bacteria
(c) fewer than 3 bacteria
(d) What are the expected number and standard deviation of
bacteria per milliliter?
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