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#### SPSS: Paired-Samples t Test Assignment Instructions Overview This assignment is designed to increase your statistical literacy and proficiency in conducting and interpreting the paired-samples t test

###### Statistics

SPSS: Paired-Samples t Test Assignment Instructions

Overview

This assignment is designed to increase your statistical literacy and proficiency in conducting and interpreting the paired-samples t test. You will be completing two paired-samples t tests in SPSS, using data that are related to specific research scenarios in the behavioral sciences, such as psychology, social work, and counseling. You will also be completing one Cumulative Knowledge Question that will use an analysis learned in a previous week. Behind the scenes knowledge of how this test is conducted is fundamental to being able to understand and apply research in your related field to your practice. Additionally, SPSS skills are professionally valuable, as it is one of the most commonly used statistical software packages in behavioral science settings, both academic and professional.

Instructions

• This assignment includes three problem sets that contain research scenarios and related questions.
• For each scenario, you will run an analysis in SPSS. The required product will include the SPSS output, an APA-style Results section describing the results, and the appropriate graph inserted as a Figure in APA style.
• For all problems, interpret results based on an alpha level of a = .05.
• This assignment is worth 90 points.

Please review the SPSS Homework Tutorial in this module for directions on how to run the statistical test, as well as the Results Sections in APA Style presentation, which includes a template for completing the APA-style Results sections for the paired-samples t test. The scenarios begin on the next page.

 Problem Set 1: The paired-samples t test Research Scenario: A sports psychologist is studying the efficacy of a new public school health program on the number of minutes 10th graders exercise per week. She surveys a sample of 10th graders before the program begins and records the number of minutes they report exercising per week. After two months in the program, the students are surveyed again. The data are listed in the table below. Using this table, enter the data into a new SPSS data file and run a paired-samples t test to test the claim that the new public health program significantly increases the number of minutes exercised for 10th graders. Create a boxplot to show the difference between the groups. Follow the directions below the table to complete this part.

 Minutes Ex./Wk. Before Program Minutes Ex./Wk. After Program 45 45 50 55 40 38 50 55 35 50 50 45 59 70 60 53 62 81 45 60

1. Paste SPSS output.  (10 pts)

1. Write an APA-style Results section based on your analysis. Include your boxplot as an APA-style Figure, with figure number and title, as demonstrated in the Results Section presentation. (Results = 12 pts; Figure = 8 pts)

 Problem Set 2: The paired-samples t test Research Scenario: A licensed marriage and family therapist (LMFT) is looking into communication issues in a sample of 9 married couples in his clinic. Specifically, he wants to know if there is a difference in how satisfied husbands and wives are with the communication in their marriage. Because he took research methods and statistics during college, he knows that he needs to use a matched-subjects design to compare related participants like spouses, which requires a paired-samples t test. Each husband and wife completes an inventory where scores range from 0 to 20, and higher scores indicate higher satisfaction with the communication in the marriage. The LMFT records their responses, shown in the table below. Using this table, enter the data into a new SPSS data file and run a paired-samples t test to test the claim that there is a difference between husbands and wives on their satisfaction with the communication within their marriage. Create a boxplot to show the difference between the groups. Follow the directions below the table to complete this part.

 Husbands Wives 12 9 14 5 8 11 4 4 7 8 10 16 7 6 9 7 3 6

1. Paste SPSS output.  (10 pts)

1. Write an APA-style Results section based on your analysis. Include your boxplot as an APA-style Figure, with figure number and title, as demonstrated in the Results Section presentation. (Results = 12 pts; Figure = 8 pts)

 Problem Set 3: Cumulative Knowledge Question Research Scenario: A social psychologist working for a marketing department wants to study the effect of scenario descriptions on charitable giving to a child hunger organization. He devises two scenarios: one in which an employee of the charity describes child hunger using facts and information (Group 1), and one in which an employee of the charity describes child hunger using an anecdotal example with one “identifiable victim” (Small, 2016) (Group 2). Eight people are interviewed in each group. After hearing the employee read the child hunger scenario, the participants are then asked to state how much money they would donate to the charity to help end child hunger. The data appear in the table below. Using this table, enter the data into a new SPSS data file. Choose the correct analysis (it will be one learned in a previous module) to determine whether there is a difference in the amount of money between the two groups. Follow the directions below the table to complete this part.

 Factual Informative Scenario (1) Anecdotal “Identifiable Victim” Scenario (2) 25 10 25 15 10 20 32 15 10 15 15 35 30 50 45 30

1. Paste SPSS output.  (10 pts)

1. Write an APA-style Results section based on your analysis. Include your boxplot as an APA-style Figure, with figure number and title, as demonstrated in the Results Section presentation. (Results = 12 pts; Figure = 8 pts)

Submit this assignment by 11:59 p.m. (ET) on Monday at the end of Module/Week 2.

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