Pre-Post Output Students were asked to join a well-being yoga seminar. They were

Question

Pre-Post Output

Students were asked to join a well-being yoga seminar. They were tested on their well-being before and after the yoga seminar intervention. A pulmonary function test was administered to report their lung strength after the 3 week intervention. Read the above output and answer the following questions:

1. How many participants were used in this study? __________________

2. Was there a significant difference in the pretest and posttest scores? _________________

3. So, should you accept or reject the null based on the .05 alpha level? ________________

4. Assuming that higher values means better functioning, was there an increase or decrease from administration 1 to administration 2? ______________________

5. According to the data, is it beneficial to keep this intervention going? ___________________

T-Test Paired Samples Statistics Std. Error Mean Mean N Std. Deviation Pair1 KQTotalPre 1468.3432 25 99.79392 1995878 KQTotalPost 4357.1214 25 3082.63429 616.52686 Paired Samples Correlations N ColaSig Pair1 KQTotalPre & KQTotalPost 25 820 Paired Samples Test Paired Differences 95% Confidence Interval of the Difference Std. Error Mean Mean Std. Deviation Lower Upper df Sig. (2-tailed) Pair1 KQTotalPre KQTotalPost 2888.77825 2982.84037596.56807 -2120.03424 3657 52226 73569 24

Explanation / Answer

ANSWERS:

1) N =25 participants

2) YES

Explanation: Here p-value = 0.000 < 0.05.

Hence there was highly significant difference in the pretest and posttest scores.

3) Reject the null hypothesis at 0.05 level (since p<0.05)

4) There was an increase in mean from administration 1 to administration 2( mean of administration 2 > mean of administration 1)

5) YES , It is beneficial to keep this intervention going

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