PSYC123 Workbook 2019 - STUDENT V2 (Repaired).docx

Conduct the appropriate hypothesis test using an

This preview shows page 57 - 66 out of 95 pages.

Conduct the appropriate hypothesis test using an alpha of .05 Show all working, attach sheets if you run out of space, and follow the layout given in your tutorial. Data collected: 6 5 7 4 6 8 3 0 6 7 1. Analyse the question and extract all relevant information 2. Determine the test type required and whether the assumptions are met for that test 3. State the Hypotheses 57
Image of page 57

Subscribe to view the full document.

Workbook 2019: Answers V2 4. Set a Decision Rule 5. Conduct the statistical test, using: SS = Σx 2 ( Σx ) 2 N ^ s 2 = SS N 1 ^ s = ^ s 2 ^ s ´ X = ^ s N t = ( ´ X μ ) ^ s ´ X 58
Image of page 58
Workbook 2019: Answers V2 6. Make a decision and conclusion 59
Image of page 59

Subscribe to view the full document.

Workbook 2019: Answers V2 10. You are investigating if academics have lower or higher stress levels than the general population. The population mean for stress levels is 13 (Fake & Citation, 2013) on the Fake Stress Levels Scale (Fake, 2005). You take a random sample of 12 academics and administer the Fake Stress Levels Scale (Fake, 2005). The resulting data is below. Conduct the appropriate hypothesis test using an alpha of .05 Show all working, attach sheets if you run out of space, and follow the layout given in your tutorial. Data 15 18 13 12 16 14 16 17 13 15 14 14 1. 2. 3. 4. 60
Image of page 60
Workbook 2019: Answers V2 5. 61
Image of page 61

Subscribe to view the full document.

Workbook 2019: Answers V2 6. 62
Image of page 62
Workbook 2019: Answers V2 Week 10: Chi-squared Practice questions (answer before tutorial). Read Chapter 15 (pages 472 -484) J&B and Chapter 15 in GH (may also help). Methods: 1. What is the chi-squared test and what values may it take? 2. When would we use a chi-squared test and (of the 4 data types described in Week 2) what data type would it best analyse? 3. What are the assumptions of the chi-squared test? 4. Does the sample size (N) impact the chi-squared value required for a particular significance? Explain. Calculations: 63 NB: Due to the public holiday on Monday 7 th October there will be no tutorials in week 10. However, students are still expected to complete the exercises and answers in the workbook for Chi-squared and do the workbook quiz in the week 11 tutorial. The workbook quiz from week 9 will be made available to students online. It will be open from Midnight Monday 7 th October to Midnight Sunday 13 th October.
Image of page 63

Subscribe to view the full document.

Workbook 2019: Answers V2 5. What is the formula for the chi-squared test? What is the formula for the expected frequency term? 6. What is the formula for determining the degrees of freedom relevant to this test? 64
Image of page 64
Workbook 2019: Answers V2 WEEK 10: Chi-squared Practice questions (answer after tutorial). Read Chapter 15 (pages 472 -484) J&B and Chapter 15 in GH . Q.1. You are researching differences in colour preferences between different generations of people. According to the research Baby Boomers (born between 1946 and 1964) had a preference for the colour red over blue. You hypothesise that Y Gen people (born between 1980 and 1994) might have different tastes. You select a random sample of 100 baby boomers and 100 Y Gen people to test this. In your analysis you will use an alpha level of 0.05.
Image of page 65

Subscribe to view the full document.

Image of page 66

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern