In Exercises 21–24, find the critical value zα/2 needed to construct a confidence interval with the given level. Level 95% Level 85% Level 96% Level 99.7%
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Step 1
The confidence level (CL) is given, and alpha = 1 – CL (expressing CL in decimal form). For example, for a 95% confidence level, CL = 0.95, so alpha = 1 – 0.95 = 0.05. Show more…
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