(Answered) Bcs quality assurance programme chooses a random sample of

Statistics

BC's quality assurance programme chooses a random sample of 50 units and finds that 12 are defective. What is the number of defectives they can be 95% confident that the population mean is below? What is the number of defectives they can be 95% confident that the population mean is above?

How do these compare with the two-sided 90% confidence interval?

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