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If the mean defect rate at a cellphone production plant is 0.1%, with a standard deviation of 0.03%, would it seem reasonable for a quality assurance manager to be concerned about 3 defective phones in a single 1000 unit run?
in Data Science by Bronze Status (8,600 points) | 24 views

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No. The expected value at 0.1% (n X p) would be 10 defective phones.

3 is lower than 10, so this is acceptable
by Wooden (560 points)
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ethnography, narrative, phenomenological, grounded theory, and case study.

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