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Defect probability

Questions (2)

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 165 and a variance of 9.
1. 2 answers
2. asked by libby
3. 522 views
A manufacturing machine has a 10% defect rate.If 10 items are chosen at random, what is the probability that at least one will
1. 1 answer
2. asked by angelika
3. 516 views