Question: A simple random sample of size 15 has mean x = 27.72 and standard deviation s = 8.21. The population is approximately normally distributed. Can

A simple random sample of size 15 has mean x̄ = 27.72 and standard deviation s = 8.21. The population is approximately normally distributed. Can you conclude that the population mean differs from 35? Use the α = 0.01 level of significance.

In Exercises 1–4, state which type of parameter is to be tested; then perform the hypothesis test.

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