Question

• General Psychology:
  • Clinicians at a small clinic have been introduced to a new method to treat post-traumatic stress disorder (PTSD) in their clients for veterans. Research indicates that virtual reality (VR) is a highly effective treatment option for patients with PTSD. Currently, the clinic uses only cognitive processing therapy (CPT) with their patients suffering from PTSD. The clinicians would like to find out whether VR therapy has different results from CPT therapy. The measure used by the clinic to measure PTSD symptoms is the Combat Exposure Scale. Both therapies need to be applied for a minimum of 12 weeks to be effective.
  • Example
  • You have a hypothesis that two drugs have different effects on lowering anxiety. You would have anxiety scores for drug A and anxiety scores for drug B (all after 4 weeks of treatment) to run inferential analysis for after 4 weeks.

• Null hypothesis is H₀: drug A = drug B

• Research hypothesis is H₁:drug A ≠ drug B
• Dependent variable: anxiety score changed after treatment
• Independent variable: drug treatment

• Because you did not state a direction in your hypotheses (better than or worse than), this will be a two-tailed test. You are looking for differences in either direction. You would set your alpha level of .05 and have a sample for each group of 30 people that were volunteers for the study.

  Example of Output You Would Use to Answer These Questions

  t Test: Two-Sample Assuming Equal Variances
  	Variable 1	Variable 2
  Mean	4.875	8
  Variance	5.267857143	18.28571429
  Observations	8	8
  Pooled variance	11.77678571
  Hypothesized mean difference	0
  df	14
  t stat	-1.821237697
  P(T <= t) one-tail	0.045002328
  t Critical one-tail	1.761310136
  P(T <= t) two-tail	0.090004655
  t Critical two-tail	2.144786688

• Create a 12- to 15-slide presentation using the information you gathered . Include the following:

• Describe the problem and provide some brief background information about the situation.
• Explain the research hypothesis.
• Describe your sample and your sampling method.
• Explain the four steps of the research process you followed, and define the critical value and the test statistic your analysis provided.
• Provide the main finding of the study. What did you prove or fail to prove?
• Provide recommendations based on your findings

Raw Data below:

GROUP 1	GROUP 2
1.3	6.5
2.5	8.7
2.3	9.8
8.1	10.2
5	7.9
7	6.5
7.5	8.7
5.2	7.9
4.4	8.7
7.6	9.1
9	8.4
7.6	6.4
4.5	7.2
1.1	5.8
5.6	6.9
6.2	5.9
7	7.6
6.9	7.8
5.6	7.3
5.2	4.6
9	8.4
7.6	6.4
4.5	7.2
1.1	5.8
5.6	6.9
6.2	5.9
7	7.6
6.9	7.8
5.6	7.3
5.2	4.6

• Format any citations in your presentation according to APA guidelines.

Answer 1