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Statistics - Probability

A typesetter, on average, makes one error in every 500 words typeset. A typical page contains 300 words. What is the probability that there will be no more than two errors in five pages. And is it possible to use a normal distribution to solve the problem or not?

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Using Poisson Distribution:

n = 300 * 5 = 1500, x = 2

lambda = 1500/500 = ...

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