nag_2_sample_t_test (g07cac) Example Program Results

Assuming population variances are equal.

t test statistic =     1.8403
Degrees of freedom =     10.0
Significance level =   0.0955
Lower confidence limit for difference in means =    -0.8429
Upper confidence limit for difference in means =     8.8429


No assumptions about population variances.

t test statistic =     2.5922
Degrees of freedom =   7.9925
Significance level =   0.0320
Lower confidence limit for difference in means =     0.4410
Upper confidence limit for difference in means =     7.5590