1.　State the appropriate hypotheses that you wish to test to conduct a two-tailed test to compare the population means.

H_o:

H_a:

2. Suppose you were asked to really conduct a one-tailed test. Use the two-tailed printout above to find the test statistic and the p-value for the one-tailed test comparing the two population means.

Test Statistic: _____________ P-Value: _____________

3. Use the confidence interval on the printout to make an inference about which of the two population means is larger. Make sure to state your measure of reliability.
 

Two-Sample T Tests for Size by Location Location 1 2 Difference Method Pooled N 25 25 Satterthwaite Mean 1251.8 1135.4 116.40 T-Tests for Mean Difference Null Hypothesis: difference = 0 Alternative Hyp: difference # 0. Variances Equal Unequal SD 260.47 146.01 211.14 Homogeneity of Variances Folded F Test. SE 52.093 29.201 59.719 DF T 48 1.95 37.7 1.95 DF F 24,24 3.18 Cases Included 50 Missing Cases 0 P 0.0571 0.0587 P 0.0031 Lower 95% C.I. -3.6739 -4.5243 Upper 95% C.I. 236.47 237.32