G07CAF Example Program Results Sample X Sample size = 4 Mean = 0.2500E+02 Standard deviation = 0.8185E+00 Sample Y Sample size = 8 Mean = 0.2100E+02 Standard deviation = 0.4208E+01 Assuming population variances are equal. t test statistic = 1.8403 Degrees of freedom = 10.0 Significance level = 0.0955 Difference in means Value = 4.0000 Lower confidence limit = -0.8429 Upper confidence limit = 8.8429 Confidence level = 0.9500 No assumptions about population variances. t test statistic = 2.5922 Degrees of freedom = 8.0 Significance level = 0.0320 Difference in means Value = 4.0000 Lower confidence limit = 0.4410 Upper confidence limit = 7.5590 Confidence level = 0.9500