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9 Sep 2020
A quality control system selects a sample of 10 items from each batch of products for testing. If 2 or more of the sample are defective the whole batch is rejected. If the probability of an item being defective is 0.05, what is the probability: i. of having 2 defects in the sample? ii. that the batch is rejected? iii. mean number of defects in a batch? iv. standard deviation of number of defects in a batch?
A quality control system selects a sample of 10 items from each batch of products for testing. If 2 or more of the sample are defective the whole batch is rejected. If the probability of an item being defective is 0.05, what is the probability: i. of having 2 defects in the sample? ii. that the batch is rejected? iii. mean number of defects in a batch? iv. standard deviation of number of defects in a batch?
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