Professor Gristmill sampled exam scores for five randomly chosen students from each of his two sections of ACC 200. His sample results are shown.

Day Class 93 58 74 85 82

Night Class 91 81 85 60 73

He could test the population means for equality using

A. a one-factor ANOVA.

B. at-test for two means from paired (related) samples.

C. either a one-factor ANOVA or a two-tailedt-test.

D. at-test for two means from independent samples.