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Exercise 5

Avg difficulty 3.0

Working backwards, Part I. A 95% confidence interval for a population mean, μ\mu, is given as (18.985, 21.015). This confidence interval is based on a simple random sample of 36 observations. Calculate the sample mean and standard deviation. Assume that all conditions necessary for inference are satisfied. Use the tt-distribution in any calculations.

Diez, Barr & Çetinkaya-Rundel, OpenIntro Statistics, Inference for numerical data, End-of-Chapter Exercises, Exercise 5

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Adapted from OpenIntro Statistics © 2019 David Diez, Mine Çetinkaya-Rundel & Christopher D. Barr. Licensed under CC BY-SA 3.0. Source: OpenIntro Statistics. Imported at revision fee2509.