Question

1. Dr. John C. Na hypothesizes that moderate exercise reduces stress in anxious people. He selected a sample of participants that scored high on an anxiety scale and assigned half of them to an exercise or no exercise condition (30 in each condition). Six months later, the participants in each group completed the study, the anxiety scores for which are presented in the table below.

Exercise	64	72	70	66	68	67	72	65	76	70
No Exercise	70	75	79	68	74	77	70	74	73	80

Test the hypothesis that a moderate exercise regimen reduces anxiety for anxious people. Report your results/interpretation in APA format.

Previous research on addiction has found that alcoholics have more activation in the left prefrontal cortex (than the right prefrontal cortex) when shown pictures relating to alcohol. Dr. Lou E. C. Kay wants to know if this happens in cocaine addicts too. He gathers five participants who reported cocaine addiction, puts them in a scanner, and shows them pictures relating to cocaine. The number of voxels (Brain acitivity markers) was recorded in each brain region in five participants:

Participants	1	2	3	4	5
Left mPFC	10	8	7	6	9
Right mPFC	7	7	5	5	6

Test the hypothesis that greater activation occurs in the left prefrontal cortex compared to the right prefrontal cortex when these participants were shown the pictures.

Report/interpret your results using APA format.

Answer 1

1)

Since the null hypothesis is rejected we have evidence that a moderate exercise regimen reduces anxiety for anxious people.

2)

This is a paired sample T-test

Since the null hypothesis is rejected we have evidence that the greater activation occurs in the left prefrontal cortex compared to the right prefrontal cortex when these participating cocaine addicts were shown the pictures.

PI HOPED IT HELPED:)