# Question

Use the following information x-bar = 3.7, s = 0.2, n = 1,200, N = 5,800--to calculate confidence intervals for assuming the sample is from a normal population:

(a) 90 percent confidence;

(b) 95 percent confidence;

(c) 99 percent confidence.

(a) 90 percent confidence;

(b) 95 percent confidence;

(c) 99 percent confidence.

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