You are interested in investigating the efficacy of a stressor and design an experiment measuring stress levels before and after performing the new stressor. You recruit 12 people to participate in your study and bring the same 12 participants in for two separate sessions. During one visit you measure their stress levels after a nonstressful task. During the other visit you measure their stress levels after participating in the new stressor. Here is the raw data: Pair Number Nonstressful Stress Score New stressor Stress Score 1 3 1 2 3 3 3 4 2 1 3 5 3 4 2 4 7 8 9 10 11 12 2 3 4 4 3 4 3 3 4 4 3 5 Use the t-test handout printout provided to calculate the t- statistic. What is the standard deviation of differences? Round to the nearest tenth.

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QUESTION 18
You are interested in investigating the efficacy of a stressor and design an experiment measuring stress levels before and after
performing the new stressor. You recruit 12 people to participate in your study and bring the same 12 participants in for two
separate sessions. During one visit you measure their stress levels after a nonstressful task. During the other visit you measure their
stress levels after participating in the new stressor. Here is the raw data:
Pair Number Nonstressful Stress Score New stressor Stress Score
1
3
2
1
3
3
4
3
5
2
6
1
7
3
5
8
3
9
10
4
2
11
4
12
2
3
4
4
3
4
3
3
4
4
3
5
Use the t-test handout printout provided to calculate the t-
statistic. What is the standard deviation of differences? Round
to the nearest tenth.
Transcribed Image Text:QUESTION 18 You are interested in investigating the efficacy of a stressor and design an experiment measuring stress levels before and after performing the new stressor. You recruit 12 people to participate in your study and bring the same 12 participants in for two separate sessions. During one visit you measure their stress levels after a nonstressful task. During the other visit you measure their stress levels after participating in the new stressor. Here is the raw data: Pair Number Nonstressful Stress Score New stressor Stress Score 1 3 2 1 3 3 4 3 5 2 6 1 7 3 5 8 3 9 10 4 2 11 4 12 2 3 4 4 3 4 3 3 4 4 3 5 Use the t-test handout printout provided to calculate the t- statistic. What is the standard deviation of differences? Round to the nearest tenth.
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