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Name Lab: Confidence Interval for a Proportion April 23, 2020 1. For a 99% confidence interval la. (2 pts) Compute a and a/2
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Answer #1

solution:

At 99% confidence level the z is ,

\alpha  = 1 - 99% = 1 - 0.99 = 0.01

\alpha / 2 = 0.01 / 2 = 0.005

Z\alpha/2 = Z0.005 = 2.576 ( Using z table )

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