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A researcher hypothesizes that watching Comedy Central reduces anger in prison inmates. A sample of 8 inmates is administered the State Anger/Hostility Scale, their mean
- A researcher hypothesizes that watching Comedy Central reduces anger in prison inmates. A sample of 8 inmates is administered the State Anger/Hostility Scale, their mean score is 5.0 with an SD of 2.5. After watching 1 hour of Comedy Central, the State Anger/Hostility scale is readministered. Their mean score is now 3.75, with an SD of 2.33. The inmates' scores (and corresponding z-scores) before and after watching Comedy Central were as follows:
state the type of test used
Subject | Before | z-before | After | z-after |
1 | 8 | 1.1 | 8 | 1.82 |
2 | 10 | 2 | 7 | 1.39 |
3 | 5 | 0 | 4 | 0.11 |
4 | 3 | -0.8 | 2 | -0.75 |
5 | 4 | -0.5 | 2 | -0.75 |
6 | 2 | -1.2 | 1 | -1.18 |
7 | 4 | -0.5 | 3 | -0.32 |
8 | 4 | -0.5 | 3 | -0.32 |
At = .05, is the researcher's hypothesis supported? Explain the results in layperson's terms.
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