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Mathematics, 22.06.2019 20:00 paolacorazza

Surface-finish defects in a small electric appliance occur at random with a mean rate of 0.3 defects per unit. find the probability that a randomly selected unit will contain at least two surface-finish defect.

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Surface-finish defects in a small electric appliance occur at random with a mean rate of 0.3 defects...
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