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It is known that 0.5% of the circuit boards from a production line are defective. If...

It is known that 0.5% of the circuit boards from a production line are defective.
If a random sample of 300 circuit boards is taken from this production line, use Poisson
approximation to estimate the probability that the sample contains:
a) At most 2 defective boards,
b) at least 3 defective boards.

Math   Statistics-And-Probability   
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