Assignment: **KIM WOODS** Time to Practice: Week 4
Time to Practice: Week 4
PSYCH/625 Version 4
3
University of Phoenix Material
Time to Practice: Week 4
Complete Parts A, B, and C below.
Part A
Some questions in Part A require that you access data from Statistics for People Who (Think They) Hate Statistics. This data is available on the student website under the Textbook Resources link.
1. Using the data in the file named Ch. 11 Data Set 2, test the research hypothesis at the .05 level of significance that boys raise their hands in class more often than girls. Do this practice problem by hand using a calculator. What is your conclusion regarding the research hypothesis? Remember to first decide whether this is a one- or two-tailed test.
2. Practice the following problems by hand just to see if you can get the numbers right. Using the following information, calculate the t-test statistic.
a.
b.
c.
3. Using the results you got from Question 2 and a level of significance at .05, what are the two-tailed critical values associated with each? Would the null hypothesis be rejected?
4. Using the data in the file named Ch. 11 Data Set 3, test the null hypothesis that urban and rural residents both have the same attitude toward gun control. Use IBM® SPSS® software to complete the analysis for this problem.
5. In the following examples, indicate whether you would perform a t-test of independent means or dependent means.
a. Two groups were exposed to different treatment levels for ankle sprains. Which treatment was most effective?
b. A researcher in nursing wanted to know if the recovery of patients was quicker when some received additional in-home care whereas when others received the standard amount.
c. A group of adolescent boys was offered interpersonal skills counseling and then tested in September and May to see if there was any impact on family harmony.
d. One group of adult men was given instructions in reducing their high blood pressure whereas another was not given any instructions.
e. One group of men was provided access to an exercise program and tested two times over a 6-month period for heart health.
6. The data set for this problem can be found through the Sage Materials in the Student Textbook Resource Access link, listed under Academic Resources. For Ch. 12 Data Set 3, compute the t value and write a conclusion on whether there is a difference in satisfaction level in a group of families’ use of service centers following a social service intervention on a scale from 1 to 15. Do this exercise using IBM® SPSS® software, and report the exact probability of the outcome. Copy and paste the output from IBM® SPSS® into this worksheet.
7. You may use SPSS for this problem or do it by hand. A famous brand-name manufacturer wants to know whether people prefer Nibbles or Wribbles. They sample each type of cracker and indicate their like or dislike on a scale from 1 to 10. Which do they like the most? Paste your t-test output into your answer and write a very brief analysis.
Nibbles rating
Wribbles rating
9
4
3
7
1
6
6
8
5
7
7
7
8
8
3
6
10
7
3
8
5
9
2
8
9
7
6
3
2
6
5
7
8
6
1
5
6
5
3
6
8. Using the following table, provide three examples of a simple one-way ANOVA, two examples of a two-factor ANOVA, and one example of a three-factor ANOVA. Complete the table for the missing examples. Identify the grouping and the test variable.
Design
Grouping variable(s)
Test variable
Simple ANOVA
Four levels of hours of training—2, 4, 6, and 8 hours
Typing accuracy
Enter Your Example Here
Enter Your Example Here
Enter Your Example Here
Enter Your Example Here
Enter Your Example Here
Enter Your Example Here
Two-factor ANOVA
Two levels of training and gender (two-way design)
Typing accuracy
Enter Your Example Here
Enter Your Example Here
Enter Your Example Here
Enter Your Example Here
Three-factor ANOVA
Two levels of training, two of gender, and three of income
Voting attitudes
Enter Your Example Here
Enter Your Example Here
9. The data set for this problem can be found through the Sage Materials in the Textbook Resources link. Using the data in Ch. 13 Data Set 2 and the IBM® SPSS® software, compute the F ratio for a comparison between the three levels representing the average amount of time that swimmers practice weekly (< 15, 15–25, and > 25 hours) with the outcome variable being their time for the 100-yard freestyle. Does practice time make a difference? Use the Options feature to obtain the means for the groups. Copy and paste the output from IBM® SPSS® into this worksheet.
10. When would you use a factorial ANOVA rather than a simple ANOVA to test the significance of the difference between the averages of two or more groups?
11. Create a drawing or plan for a 2 × 3 experimental design that would lend itself to a factorial ANOVA. Identify the independent and dependent variables.
Complete the questions below. Be specific and provide examples when relevant.
Cite any sources consistent with APA guidelines.
Question
Answer
What is meant by independent samples? Provide a research example of two independent samples.
When is it appropriate to use a t-test for dependent samples? What is the key piece of information you must know in order to decide?
When is it appropriate to use an ANOVA? What is the key piece of information you must know in order to decide?
Why would you want to do an ANOVA when you have more than two groups, rather than just comparing each pair of means with a t-test?
Important information for writing discussion questions and participation
Hi Class,
Please read through the following information on writing a Discussion question response and participation posts.
Contact me if you have any questions.
Important information on Writing a Discussion Question
Your response needs to be a minimum of 150 words (not including your list of references)
There needs to be at least TWO references with ONE being a peer reviewed professional journal article.
Include in-text citations in your response
Do not include quotes—instead summarize and paraphrase the information
Follow APA-7th edition
Points will be deducted if the above is not followed
Participation –replies to your classmates or instructor
A minimum of 6 responses per week, on at least 3 days of the week.
Each response needs at least ONE reference with citations—best if it is a peer reviewed journal article
Each response needs to be at least 75 words in length (does not include your list of references)
Responses need to be substantive by bringing information to the discussion or further enhance the discussion. Responses of “I agree” or “great post” does not count for the word count.
Follow APA 7th edition
Points will be deducted if the above is not followed
Remember to use and follow APA-7th edition for all weekly assignments, discussion questions, and participation points.
Hello class and welcome to the class and I will be your instructor for this course. This is a -week course and requires a lot of time commitment, organization, and a high level of dedication. Please use the class syllabus to guide you through all the assignments required for the course. I have also attached the classroom policies to this announcement to know your expectations for this course. Please review this document carefully and ask me any questions if you do. You could email me at any time or send me a message via the “message” icon in halo if you need to contact me. I check my email regularly, so you should get a response within 24 hours. If you have not heard from me within 24 hours and need to contact me urgently, please send a follow up text to.
I strongly encourage that you do not wait until the very last minute to complete your assignments. Your assignments in weeks 4 and 5 require early planning as you would need to present a teaching plan and interview a community health provider. I advise you look at the requirements for these assignments at the beginning of the course and plan accordingly. I have posted the YouTube link that explains all the class assignments in detail. It is required that you watch this 32-minute video as the assignments from week 3 through 5 require that you follow the instructions to the letter to succeed. Failure to complete these assignments according to instructions might lead to a zero. After watching the video, please schedule a one-on-one with me to discuss your topic for your project by the second week of class. Use this link to schedule a 15-minute session. Please, call me at the time of your appointment on my number. Please note that I will NOT call you.
Please, be advised I do NOT accept any assignments by email. If you are having technical issues with uploading an assignment, contact the technical department and inform me of the issue. If you have any issues that would prevent you from getting your assignments to me by the deadline, please inform me to request a possible extension. Note that working fulltime or overtime is no excuse for late assignments. There is a 5%-point deduction for every day your assignment is late. This only applies to approved extensions. Late assignments will not be accepted.
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Plagiarism is highly prohibited. Please ensure you are citing your sources correctly using APA 7th edition. All assignments including discussion posts should be formatted in APA with the appropriate spacing, font, margin, and indents. Any papers not well formatted would be returned back to you, hence, I advise you review APA formatting style. I have attached a sample paper in APA format and will also post sample discussion responses in subsequent announcements.
Your initial discussion post should be a minimum of 200 words and response posts should be a minimum of 150 words. Be advised that I grade based on quality and not necessarily the number of words you post. A minimum of TWO references should be used for your initial post. For your response post, you do not need references as personal experiences would count as response posts. If you however cite anything from the literature for your response post, it is required that you cite your reference. You should include a minimum of THREE references for papers in this course. Please note that references should be no more than 5 years old except recommended as a resource for the class. Furthermore, for each discussion board question, you need ONE initial substantive response and TWO substantive responses to either your classmates or your instructor for a total of THREE responses. There are TWO discussion questions each week, hence, you need a total minimum of SIX discussion posts for each week. I usually post a discussion question each week. You could also respond to these as it would count towards your required SIX discussion posts for the week.
I understand this is a lot of information to cover in 5 weeks, however, the Bible says in Philippians 4:13 that we can do all things through Christ that strengthens us. Even in times like this, we are encouraged by God’s word that we have that ability in us to succeed with His strength. I pray that each and every one of you receives strength for this course and life generally as we navigate through this pandemic that is shaking our world today. Relax and enjoy the course!
