(c) Confidence level = 99%, df = 10 3.169 (d) Confidence level = 99%, n = 10 (e) Confidence level = 98%, df = 21 (f) Confidence level = 99%, n = 32
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- Find the critical value zc necessary to construct a confidence interval at the level of confidence, c. Round to the nearest 1 00 th . c = 0.86 b. c = 0.92Find the critical value zc necessary to form a confidence interval at the level of confidence shown below. Zc=______________. Round to two decimal places. c= 0.91Find the critical value, t c, used for a 95% confidence interval for the mean with a sample size of 28. Round to three decimal places.