The critical value

    1. Find the critical value ze necessary to construct a confidence interval at the level of confidence, c. Round to the nearest 1001^. o. c = 0.86 b. c = 0.92 2. Find the margin of error for the values. Round to the nearest 1000th: c = 0.95 a = 5.7 n = 40 3. Use the confidence interval to find the morgin of error and the sample mean: (21.61, 30.15)