14. Two methods were used in a study of the latent heat of fusing of ice. Both method A (an electrical method) and method B (a method of mixtures) were conducted with the specimens cooled to −0.72 ◦C. The data below represent the change in total heat from −0.72 ◦C, in calories per gram of mass:

Method A Method B 79.98 79.97 80.02 79.97 80.04 80.05 79.94 80.03 80.02 80.03 79.98 79.95 80.04 80.02 79.97 79.97 80.03 80.00 80.04 80.02 80.03 Assuming normality of the population of determinations for each method as well as equal variances, test at the 5% level of significance the hypothesis that the change in total heat measured by method A is the same as that of method B.