Other possible answers are 7.290, 7.937, 7.842

An investigation of the effectiveness of a training program to improve customer relationships included a pre-training and a post-training customer survey. To compare the differences, they computed post-training survey score - pre-training survey score. Seven customers were randomly selected and completed both surveys. The results are shown here. Pre-training Post-training Customer Survey Survey A 6 8 B 4 6 10 14 D 8 11 7 9 6 10 N 6 What is the value of the test statistic? Multiple Choice O 7.338