SOLUTION: in an inspection of 4000 electrical components built to a very high specification, 10 were found to be defective. determine the 90% confidence interval limit of the true populat

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Question 860368: in an inspection of 4000 electrical components built to a very high specification, 10 were found to be defective.
determine the 90% confidence interval limit of the true population of defectives in the population of the components
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

CI      z-value

90%	z =1.645

92%	z = 1.751

95%	z = 1.96

98%	z = 2.326

99%	z = 2.576

p = 10/4000 = .0025, q = .0075

ME = 1.645sqrt%28%28.0025%2A.0075%29%2F4000%29

CI: 10-ME < u <  10 + ME