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 minus pre-training survey score. Seven customers were randomly selected and completed both surveys. The results are shown here: Customer Pre-training Survey Post -training Survey A 6 8 6 11 14 8 11 7 10 8 9 What is the value of the test statistic? Multiple Choice O 5.013 O 4.965 O 5.612