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9.4 Explain which of the following is a two-tailed test, a left-tailed test, or a right-tailed...

9.4 Explain which of the following is a two-tailed test, a left-tailed test, or a right-tailed test. a. H0: μ = 12, H1: μ < 12 b. H0: μ ≤ 85, H1: μ > 85 c. H0: μ = 33, H1: μ ≠ 33 Show the rejection and nonrejection regions for each of these cases by drawing a sampling distribution curve for the sample mean, assuming that it is normally distributed.

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