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Part I: Questions 6-8 Compute effect size in the following questions: |
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6) |
A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales personnel at this national company is 47 with a standard deviation of 5.1. The mean number of sales per month for those who participated in the new program is 50. |
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Answer |
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7) |
On a certain anxiety questionnaire, the general population is known to have a mean of 19 and a standard deviation of 2.1. A higher score represents higher levels of anxiety. Participants in a new relaxation program complete the questionnaire after completing the program and have a mean score of 17. |
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8) |
A residential treatment facility tests a new group therapy for patients with self-destructive behaviors. The therapists hope to decrease scores on a measure of self-destructive behaviors that has a mean in the overall residential treatment population of 16 and a standard deviation of 0.5. The mean score for the patients after the new group therapy is 14.9. |
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Answer |
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