Explaining the confidence interval for the population mean

Reference no: EM131813467

Question: A random sample of size 28 is drawn from a normal population. The summary statistics are x¯ = 68.6 and s = 1.28.

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

b. Construct a 99.5% confidence interval for the population mean μ.

c. Comment on why one interval is longer than the other.

Reference no: EM131813467

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