2.13. Consider the computer output shown below.

(a) Fill in the missing values in the output. Can the null hypothesis be rejected at the 0.05 level? Why?

(b) Is this a one-sided or a two-sided test?

(c) If the hypotheses had been H0 : $ $ 90 versus H1 : $ ! 90 would you reject the null hypothesis at the 0.05 level?

(d) Use the output and the t table to find a 99 percent twosided CI on the mean.

(e) What is the P-value if the alternative hypothesis is H1 : $ , 91?

One-Sample T: Y Test of mu=91 vs. not = 91 Variable N Mean Std. Y 25 92.5805 ? Dev. SE Mean 0.4673 T P 95% CI (91.6160, ?) 3.38 0.002