Question: A simple random sample of size 7 has mean x = 32.5 and standard deviation s = 8.27. The population is normally distributed. Can you

A simple random sample of size 7 has mean x̄ = 32.5 and standard deviation s = 8.27. The population is normally distributed. Can you conclude that the population standard deviation is greater than 6? Use the α = 0.05 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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