Question: A random sample of size n = 12 from a normal population has the mean x = 27.8 and the variance 2 = 3.24. If

A random sample of size n = 12 from a normal population has the mean x = 27.8 and the variance σ2 = 3.24. If we base our decision on the statistic of Theorem 8.13, can we say that the given information supports the claim that the mean of the population is µ = 28.5?

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