Mathematics, 06.05.2020 08:28 emmilicious

A 95 percent confidence interval for the mean of a population is to be constructedand must be accurate within 0.3 unit. A preliminary sample standard deviation is2.9. The smallest sample size n that provides the desired accuracy with 95 percentconfidence is:.A. 400 B. 359 C. 389 D. 253

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A 95 percent confidence interval for the mean of a population is to be constructedand must be accura...