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Struggling with Poisson Distribution. Please could you explain the calculation? Assume that a number of network...

Struggling with Poisson Distribution. Please could you explain the calculation?

Assume that a number of network errors experienced in a day in a local area network are distributed as a Poisson random variable. The mean number of network errors experienced in a day is 1.6.

1) Work out the probability that in any given day more than two network errors will occur

2) Work out the probability that in any given day two or more network errors will occur

3) Work out the probability that in any given day two or less network errors will occur

Please help me to understand the calculation and how to calculate the probability.

Math   Statistics-And-Probability   
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