Question: Hello, I am working on a problem: With 80% confidence, for sample proportion 0.52 and sample size 28 what is the upper confidence limit with

Hello,

I am working on a problem:

With 80% confidence, for sample proportion 0.52 and sample size 28 what is the upper confidence limit with 2 decimal places

Upper limit = p + z*pq/n

at 80% z=1.28

Hence upper limit = 0.52 +1.28*sqrt(0.56*0.44/28)

= Is this correct?

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