PART 2 Review of all 3 t-tests. Enter the data and run the correct test using JASP. Write a conclusion for each.

2A.The average satisfaction score for graduating seniors has been 15 for several years. This year, 10 people were sampled, and their scores were as follows: 7, 8, 12, 14, 16, 18, 19, 19, 22, 25. Do these people differ significantly from past year's seniors? What is the population mean () and sample mean (M)? ___ What is the proper t-test? _______________________

Write an APA-style conclusion based on the SPSS results:

2B. Enter the data below into JASP. It is from a sensory deprivation study looking at hearing threshold before or after one hour in a sensory deprivation chamber. Seven subjects participated in both before and after conditions in the actual study. Test the hypothesis that hearing should be more sensitive (thus lower numbers) after sensory deprivation compared with before.

BEFORE: 11, 34, 18, 33, 35, 22, 35 AFTER: 13, 31, 18, 29, 32, 20, 28

Proper type of t-test to use: _____________________________________________

Is the hypothesis one-tailed or two-tailed? _____________________________________________

What is the significance level two-tailed? __________ What is the significance level one-tailed? __________

What is your conclusion based on this hypothesis test? Report in APA format.

2C. Use the same data as above, but pretend that there were 14 subjects who were randomly assigned to two groups. One group was tested before deprivation, the other group after deprivation. Test whether or not the two groups in this design differ in their auditory sensitivity. (You will have to rethink the way you entered the data in order to do the analysis this way.)

Proper type of t-test to use: _____________________________________________

Is the hypothesis one-tailed or two-tailed? _____________________________________________

What is the significance level two-tailed? __________ What is the significance level one-tailed? __________

What is your conclusion based on this hypothesis test? Report in APA format.

2C.On the back, brieflysummarize major advantages and disadvantages of between and within-SS design.