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Unformatted text preview: has been exceeded. Suppose the maximum allowable proportion defective for a purchase of computer chips is 0.03. An inspection plan has been devised, based on a random sample of 300 chips. If 3% or more defective chips are found (i.e. ≥ 0.03), the entire lot is deemed unacceptable and is inspected in its entirety at the supplier’s expense. Suppose a batch of 10,000 chips contains 1.9% defective chips (this would be unknown to both supplier and purchaser, since the batch has not been inspected). Note that this is an acceptable proportion of defectives. a. Find the mean and the variance of the sample proportion . b. Find the probability that the lot will be deemed unacceptable, i.e., P( ≥ 0.03). c. Now suppose there are five large batches, each containing 1.9% defective chips. What is the probability that exactly two batches will be deemed unacceptable?...
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This note was uploaded on 01/01/2010 for the course ISOM ISOM111 taught by Professor Anthonychan during the Spring '09 term at HKUST.
- Spring '09