Q2)Three t-tests: JASP (15 points total)

The variables for this question are included in a data set from a similar study to the one you saw in the PowerPoint lecture this week. RQ1: In this study, participants were assigned to either a high-screen resolution condition or a low-screen resolution condition. In both of these conditions, each participant played two types of video games: a non-violent game and a violent game. RQ2 (RQ2 only utilizes Time 2 and Time 3): All participants were also asked to pour out how much hot sauce they'd make someone else eat, at three points over the experiment. The first was at the start of the experiment ("Control"), the second was after the non-violent game ("Tetris"), and the third was after playing the violent game ("Zombies"). The amount of hot sauce administered by participants (in ounces) was the measure of aggression (DV). RQ3: The researchers also wanted to test whether this aggression was significantly different than the population.

Q2a. The first research question (RQ1) I want you to examine is whether participants in the high-resolution condition differed from those in the low-resolution condition ("conditionCode") in the amount of hot sauce they administered after the no-game control ("Control"). What is the appropriate null hypothesis for this research question?

[.5 points total]

Q2b. State the appropriate test for RQ1.

[1 point total]

Q2c. Using JASP, answer RQ1 by conducting the analytic technique you selected above (in Q2b).Report the tstatistic,p-value, CI, and Cohen's d(remember to round to the second decimal place).

[2 points total; .5 points for each value]

Q2d. In one sentence, state whether your result (from Q2c) was statistically significant and explain how you made that decision. In a second sentence, state your conclusion (use the proper statement: reject the null hypothesis or fail to reject the null hypothesis).

[.5 points total]

Q2e. The second research question (RQ2) I want you to examine is whether all participants administered a different amount of hot sauce after they played the zombies game than after they played Tetris. (hint: Ignore the "condition" and "Control" variables in this analysis) What is the appropriate alternative hypothesis for this research question?

[.5 points total]

Q2f. State the appropriate test for RQ2.

[1 point total]

Q2g. Using JASP, answer RQ2 by conducting the analytic technique you selected above (in Q2f).Report the tstatistic,p-value, CI, and Cohen's d(remember to round to the second decimal place).

[2 points total; .5 points for each value]

Q2h. In one sentence, state whether your result (from Q2g) was statistically significant and explain how you made that decision. In a second sentence, state your conclusion (use the proper statement: reject the null hypothesis or fail to reject the null hypothesis).

[.5 points total]

Q2i. The third research question (RQ3): Is the DV (DV="Control") in this sample significantly different than the population? State the appropriate null and alternative hypothesis for this research question.

[1 point total; .5 points for each hypothesis]

Q2j. State the appropriate test for RQ3.

[1 point total]

Q2k. Using JASP, answer RQ3 by conducting the analytic technique you selected above (in Q2j).Report the tstatistic,p-value, CI, and Cohen's d(remember to round to the second decimal place).

Hint:Since we don't have a population mean, leave the "test value" in JASP as the default (i.e., 0).

[2 points total; .5 points for each value]

Q2l. In one sentence, state whether your result (from Q2k) was statistically significant and explain how you made that decision. In a second sentence, state your conclusion (use the proper statement: reject the null hypothesis or fail to reject the null hypothesis).

[.5 points total]

Q2m. Explain the difference between each of these tests (i.e., describe when you would use a one-sample t-test, paired-samples t-test, and an independent-samples t-test).

[2.5 points total]

Participant	conditionCode	condition	Control	Tetris	Zombies
2	1	High Resolution	4.345	1.058	2.165
4	1	High Resolution	3.434	3.17	4.94
6	1	High Resolution	2.773	5.822	6.03
8	1	High Resolution	1.956	0.995	2.337
10	1	High Resolution	1.447	2.044	4.568
11	1	High Resolution	1.609	1.373	3.236
12	1	High Resolution	3.454	1.01	1.95
14	1	High Resolution	1.66	2.497	3.567
16	1	High Resolution	4.322	0.555	2.516
19	1	High Resolution	2.925	3.099	3.733
20	1	High Resolution	2.897	1.382	1.617
25	1	High Resolution	3.322	0.436	0.629
1	0	Low Resolution	3.017	4.138	4.704
3	0	Low Resolution	1.942	1.192	2.557
5	0	Low Resolution	1.221	2.804	4.613
7	0	Low Resolution	0.972	1.011	1.899
9	0	Low Resolution	0.391	0.252	0.643
13	0	Low Resolution	1.421	0.733	0.942
15	0	Low Resolution	1.343	4.675	5.116
17	0	Low Resolution	1.222	2.234	4.158
18	0	Low Resolution	1.111	3.936	4.506
21	0	Low Resolution	1.998	1.993	2.977
22	0	Low Resolution	1.985	2.197	2.041
23	0	Low Resolution	1.123	3.821	4.479
24	0	Low Resolution	0.959	0.804	2.987