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What is the probability that at least 3 but fewer than 6

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Suppose that 10% of all manufactured items produced by a certain process are nonconforming/defective and will be scrapped. A quality control manager samples 20 items from a recent production.

i) What is the probability that at least 3 but fewer than 6 items are defective?

ii) Find the probability that more than 15 items are not defective.

iii) Suppose a batch of 160 samples contains 95% non-defective items. Use a suitable approximation to find the probability that not more than 10 items are defective.

Reference no: EM132851039

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