question 22

A sample mean, sample standard deviation, and sample size are given. Use the one-mean t-test to perform the required hypothesis test about the mean, u, of the population from which the sample was drawn. Use the critical-value approach. 22) x = 3.1 , s =0.52, n =9, HQ: H=2.85, H : H> 2.85, a =0.01 22) A) Test statistic: t = 1.44. Critical value: t = 2.821. Do not reject Ho. There is not sufficient evidence to support the claim that the mean is greater than 2.85. B) Test statistic: t = 1.44. Critical value: t = 2.896. Reject Ho. There is sufficient evidence to support the claim that the mean is greater than 2.85. C) Test statistic: t = 1.44. Critical value: t = 2.33. Do not reject Ho. There is not sufficient evidence to support the claim that the mean is greater than 2.85. D) Test statistic: t = 1.44. Critical value: t = 2.896. Do not reject Ho. There is not sufficient evidence to support the claim that the mean is greater than 2.85