An organizational psychologist developed a 2-week training program in order to improve team behavior in an organization. The program consisted of working with teams to promote a more inclusive and satisfying work experience. To assess the program's effectiveness, a random sample of 15 employees was asked to complete a teamwork survey before they began the training program. This survey was scored on a scale of 10-150, where higher scores reflected a greater awareness of teamwork, communication, leadership, and support. After the training was complete, the same teamwork survey was given to the participants. The scores for each of these surveys are presented in Table 5.10. Is the training program effective in promoting teamwork? Clearly state the null and alternative hypotheses, calculate any relevant statistics, and clearly label the appropriate sampling distribution. If an effect is found, provide a clear and concise interpretation of the effect.

Table 5.10

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Pre- and Post-Survey Responses on a Teamwork Survey Survey Responses Before 69 Survey Responses After Difference (Before - After) 76 -7 72 73 39 58 -19 99 98 117 119 i - -2 115 120 -5 126 115 11 62 59 64 69 120 -53 69 -20 96 -31 87 -25 107 84 -25 96 -10 105 2 67 -3 76 -7