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an insurance company estimates 40 percent of its claim have errors. The insurance company wants to estimate with 90 percent confidence the proportion of claims with errors
14 years ago

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MathGuru
CI90 = p + or - 1.645 [√(pq/n)]
...where p = .40, q = 1 - p, n = sample size.

I'll let you take it from here.


14 years ago

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