Statistics homework

PSY514

Assignment 4

Instruction:

· Use this Word document to record the calculation/analysis process and the answers.

· Submit your answers through the M7 Assignment “Quiz”

Information about the data set:

This data set is part of a data set collected by surveying a sample of young adults aged 18-20 regarding their preferences and opinions. One variable shows the social media platform used the most (SocialMedia); the other variable shows whether they support the Defund the Police movement (DefundPolice).

Perform a Chi-Square test for hypothesis testing (8 points total)

Analyze the data to answer the research question:

Do the major social media platforms vary significantly in term of user preference?

Q1. What is the null hypothesis to be tested for this research question? (1)

Q2. Which variable(s) will you be testing? (1)

Q3. Now that you’ve established how many variables you will be testing, what type of Chi-Squared test will you be running? (i.e., Chi-Squared for Goodness of Fit or Chi-Squared Test of Independence) (1)

Q4. Perform the Chi-square test to test this hypothesis. For Instagram, what is the Observed N? What is the Expected N? (1)

Q5. Report the chi-square test result in APA format, including 2 (with df and N) and p value. (2)

Q6. What is the decision of hypothesis testing (reject or fail to reject)? How do you know? (1)

Q7. What is the answer to the research question? (1)

Perform a Chi-Square test for hypothesis testing (8 points total)

Perform a chi-square test to answer the following research question:

Is support for the “Defund the Police” movement related to preferred social media platform?

(In other words, does support for the movement differ significantly across the social media platform preferences?)

Q8. What is the null hypothesis? (1)

Q9. Which variable(s) will you be testing? (1)

Q10. Now that you’ve established how many variables you will be testing, what type of Chi-Squared test will you be running? (i.e., Chi-Squared for Goodness of Fit or Chi-Squared Test of Independence) (1)

Q11. Perform the Chi-square test to test the hypothesis you just created. Report the chi-square test result in APA format, including 2 (with df and N) and p value. (2)

Q12. What is the decision of hypothesis testing (reject or fail to reject)? How do you know? (1)

Q13. What is the answer to the research question? (1)

Q14. Calculate the percentage of those who aren’t sure if they support Defund the Police movement within each social media group. Which social media group has the highest percentage? What is that percentage? (1)

Hint - (# of “not sure” people within a social media group) divided by (Total # in that social media group)

Perform a Chi-Square test for hypothesis testing (9 points total)

In another survey study on a group of 200 adults (Study B), 98 participants supported the Defund the Police movement, 96 participants opposed the Defund the Police movement, and 6 of them were unsure.

Do the adults from the data set show the same pattern as the group of adults from Study B (listed above) in terms of support for the Defund the Police movement?

Q15. What is your null hypothesis? (1)

Q16. Which variable(s) will you be testing? (1)

Q17. Now that you’ve established how many variables you will be testing, what type of Chi-Squared test will you be running? (i.e., Chi-Squared for Goodness of Fit or Chi-Squared Test of Independence) (1)

Q18. Perform the Chi-square test to test the hypothesis you just created. For people who support the movement, what is the Observed N? What about Expected N? (2)

Q19. Report the chi-square test result in APA format, including 2 (with df and N) and p value. (1)

Q20. What is the decision of hypothesis testing (reject or fail to reject)? How do you know? (1)

Q21. What is the answer to the research question? (1)

Q22. Comparing our data with the other study, the difference in the number of supporters is the largest for which opinion (support, oppose, or unsure) about the Defund the Police movement? (1)

And finally…

Q23. Thank you again for your flexibility this session as we created new materials for this course specifically designed for Forensic Psychology students! Because you were all so patient, we wanted to throw you some freebie points for this assignment by giving us some feedback. On the quiz, there will be an open-ended question for you to let us know how we can improve the course. Note that, to get points for this question, you need to both (a) provide feedback and (b) check a box indicating that you provided feedback. Thank you in advance for your thoughtful responses! (5)