Question:

To compare two dog training programs, an obedience school trained 43 dogs using program A and 41 dogs using program B. For program A, the average number of training hours required was 24.8 with a standard deviation of 3.1. For program B, the mean was 22.9 hours with a standard deviation of 3.3. Which of the following is the correct test statistic used if you wanted to compare the two programs? O 21.8 22.9 O 22.9 (21.8 220) 3133- O 220