Perform Related and Independent t samples in Jasp-Must show calculations for both worksheets!

Complete this worksheet to test the hypothesis that being chased by a zombie or not has an effect on post-training ratings (ZOMB2 scores). Perform an independent t-test using the summary data provided, and by using JASP. Calculate the effect size and confidence interval statistics in your analysis.

1. Does having been chased by zombies effect the post-training attitude rating towards zombies? (1 point)

a. Hypotheses:

i. Null hypothesis:

ii. Alternative Hypothesis:

b. Criterion (1 point)

i. One tailed or two tailed?

ii. df =

iii. Critical value at .05 level:

c. Calculate: tobt =

Show formula and computations (using summary data from table above): 4 points

d. Determine significance (2 points)

i. Reject or fail to reject the null hypothesis:

ii. If significant describe finding:

2. Calculate and interpret Cohen’s d for effect size: (2 points)

Calculate and interpret r2 for effect size: (2 points)

Calculate the 95% confidence interval for the mean difference: (2 points)

3. Perform the same independent samples t-test using JASP. Include the location parameter (including Confidence interval), effect size statistic, descriptives, and descriptives plots. Copy and paste the output from the JASP test below. (4 points)