A random sample of 16 values is drawn from a mound-shaped and symmetric distribution. The sample mean is 9 and the sample standard deviation is 2. Use a level of significance of 0.05 to conduct a two-tailed test of the claim that the population mean is 8.5.(a) Is it appropriate to use a Student's t distribution? Explain.Yes, because the distribution is mound-shaped and symmetric, and σ is unknown.How many degrees of freedom do we use?(b) What are the hypotheses?H0: μ = 8.5; H1: μ ≠ 8.5(c) C
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