Random sample of 36 value is drawn from Mound-shaped and symmetric distribution. The sample mean is 9 and sample deviation is 2 use level of significance of 0.05 to conduct to tell Test and Claim that the population mean is 8.5.

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(a) Is it appropriate to use a Student's t distribution? Explain. Yes, because the x distribution is mound-shaped and symmetric and is unknown. No, the x distribution is skewed left. No, the x distribution is skewed right. No, the x distribution is not symmetric. No, is known. How many degrees of freedom do we use? (b) What are the hypotheses? O Ho = 8.5; H: > 8.5 o Hoi R < 8.5; H H = 8.5 Ho: H>8.5; H: = 8.5 Ho=8.5; H: <8.5 o Ho: H = 8.5; H H = 8.5 (a) Is it appropriate to use a Student's t distribution? Explain. Yes, because the x distribution is mound-shaped and symmetric and is unknown. No, the x distribution is skewed left. No, the x distribution is skewed right. No, the x distribution is not symmetric. No, is known. How many degrees of freedom do we use? (b) What are the hypotheses? O Ho = 8.5; H: > 8.5 o Hoi R < 8.5; H H = 8.5 Ho: H>8.5; H: = 8.5 Ho=8.5; H: <8.5 o Ho: H = 8.5; H H = 8.5