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27 February, 18:41

Approximately 4% of silicon wafers produced by a manufacturer have fewer than two large flaws. If Y, the number of flaws per wafer, has a Poisson distribution, what proportion of wafer have more than five large flaws?

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  1. 27 February, 18:44
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    Y ~ Po (λ)

    P (Y < 2) = P (Y ≤ 1) = 0.04

    Plug into the pdf for Po (λ), and solve for λ

    After that, use your answer to find P (Y > 5)
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