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Distribution of heights for a population of individuals

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The distribution of heights for a population of individuals between the ages of 12 and 40 who suffer from fetal alcohol syndrome is approximately normal with unknown mean μ. A random sample of 31 patients is selected from the underlying population; the mean height for these individuals is ??¯ =147.4 cm and a sample standard deviation s=6.

a. Construct a 95% confidence interval for the mean μ.

b. Construct a 99% confidence interval for the mean μ.

c. Can we omit the normal assumption?

Reference no: EM133265264

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