R Assignment dependent t independent t

docx

School

Schoolcraft College *

*We aren’t endorsed by this school

Course

2100

Subject

Statistics

Date

Apr 3, 2024

Type

docx

Pages

Uploaded by JusticeOtterPerson8239

R Assignment 3-Dependent & Independent t-tests Name:_______________________ Please read the instructions carefully: Use the homework assignment sheet (the current page) as your cover page, which is then followed by your write-up. For each question, provide the R outputs by copying and pasting them to your Words document (see example below). Highlight relevant numbers in output. The write-up must be typed. Make sure to use full sentences to describe the results. (e.g., frequencies table shows that there are 20% of people in group 1‚Ä¶) Provide your answers and output (if required) below each question. You must hand-in the assignment for grading. STAPLE your assignment.

R Assignment 3-Dependent & Independent t-tests Name:_______________________ QUESTION 1: A researcher investigated the impact of different training programs on police effectiveness in resolving domestic disputes. They randomly selected a group of police officers and divided them into two equal groups. One group completed a sensitivity course, while the other completed a regular fitness course. After completing their respective courses, all participants were assessed on their ability to successfully resolve a simulated domestic dispute. Data pertaining to this study can be found on Canvas in the 'police.csv' file. In the dataset, a higher score on the 'performance' variable indicates better skills in resolving disputes, while the 'training' variable is coded as '1' for the fitness course and '2' for the sensitivity course. 1. Specify the research hypothesis (2 pts) 2. Specify the null hypothesis (2 pts) 3. Calculate the mean and standard deviation of the performance scores for people in the fitness versus sensitivity course. Describe the statistics briefly. Answer this question with R. To show your work, copy and paste the R-script and output below. (6 pts) Expected scripts: (2 points) Expected output: (2 points) Expected write-up: (2 points) 1. Compute the t-statistic and effect size in R. Based on the calculation of t , make a decision whether reject or do not reject the null hypothesis. Explain why. To show your work, copy and paste the R-script and output below. (6 pts) Expected scripts: (2 points) Expected output: (2 points) Expected write-up: (2 points) 2. Report your findings in APA format. (5 pts).

R Assignment 3-Dependent & Independent t-tests Name:_______________________ QUESTION 2: A researcher is examining whether children demonstrate a change in aggressiveness after viewing a violent television program. The instances of aggressive behavior for the same ten children before and after watching the program are documented in the data file named 'children.csv'. 1. Specify the research hypothesis (2 pts) 2. Specify the null hypothesis (2 pts) Calculate the mean and standard deviation of the aggression scores before and after the participants watched the violent TV show. Provide a brief description of the statistics. Please answer this question using R. To display your calculations, include the R script and output below. (6 points). Expected scripts: (2 points) Expected output: (2 points) Expected write-up: (2 points) 3. Compute the t-statistic and effect size in R. Based on the calculation of t , make a decision whether reject or do not reject the null hypothesis. Explain why. To show your work, copy and paste the R-script and output below. (6 pts) Expected scripts: (2 points) Expected output: (2 points) Expected write-up: (2 points) 4. Report your findings in APA format. (5 pts).

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Related Documents

statistics homework 7.pdf

Tree+Diagrams+and+Bayes.docx

W11 Quiz.docx

wor4_sols.docx

DaitrusGarnes_MTH140_Week5_CourseProject.docx

Lab1_Sampling Methods and Bias_ Final (1).docx

R Assignment 2_one sample t-1 (1).docx

asg2.pdf

Default Report GIT340 Assignment 2.pdf

Regression Analysis.docx

Week 9 Mini Individual Assignment_v2.docx

POS 401 Quiz 1.docx

Recommended textbooks for you

Glencoe Algebra 1, Student Edition, 9780079039897...

Algebra

ISBN:9780079039897

Author:Carter

Publisher:McGraw Hill

Algebra & Trigonometry with Analytic Geometry

Algebra

ISBN:9781133382119

Author:Swokowski

Publisher:Cengage

Holt Mcdougal Larson Pre-algebra: Student Edition...

Algebra

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

College Algebra (MindTap Course List)

Algebra

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:Cengage Learning

Algebra: Structure And Method, Book 1

Algebra

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:McDougal Littell

SEE MORE TEXTBOOKS

Recommended textbooks for you

Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:9781133382119
Author:Swokowski
Publisher:Cengage
Holt Mcdougal Larson Pre-algebra: Student Edition...
Algebra
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
College Algebra (MindTap Course List)
Algebra
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:Cengage Learning
Algebra: Structure And Method, Book 1
Algebra
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:McDougal Littell