HW 14 (Psy3211)

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Homework 14

 

For this assignment, you’re going to show off all the awesome stats skills that you’ve learned this semester. There are no calculations for this assignment, but you will be required to synthesize information from all the chapters we’ve learned this semester.

I expect your answers to be your own original answers.

Top of Form

 

Scenario 1: A local high school wants to see how their AP Psychology exam scores compare to the AP Psychology exam scores for the whole country.

 

Question 11 pts

What is the most appropriate test statistic to use to test the hypothesis in scenario 1?

 

Group of answer choices

  • Regression
  • One sample z-test
  • One way ANOVA
  • Dependent samples t test
  • Z-score
  • Correlation coefficient
  • Independent samples t-test

 

Question 20.25 pts

What is the null hypothesis for scenario 1?

 

Group of answer choices

  • r > 0
  • H0: m1 (sample)≤m2 (population)
  • H0: X1 (sample) = X2 (population) = X3 (control)
  • H0: X (sample) = µ (population)
  • H0: X (sample) > µ (population)
  • H0: X (population) ≥µ (sample)

 

Question 30.25 pts

What is the alternative hypothesis for scenario 1?

 

Group of answer choices

  • H1: m1 < m2
  • r ≠ 0
  • H1: X1 ≠ X2 ≠ X3
  • H1: X ≠ µ

 

 

Scenario 2. A researcher is interested in examining how a new exercise program aimed at body positivity can influence teenagers’ self-esteem. She randomly assigns teenagers to either engage in the new exercise program for 8 weeks (the experimental group) or to a control group that does not do the program and then compares their self-esteem.

 

Question 41 pts

What is the most appropriate test statistic to use to test the hypothesis in scenario 2?

 

Group of answer choices

  • Factor Analysis
  • Independent samples t-Test
  • z-score
  • Correlation Coefficient
  • z-test
  • Structural Equation Model
  • One-way ANOVA
  • Dependent samples t-Test

 

Question 50.25 pts

What is the null hypothesis for scenario 2?

 

Group of answer choices

  • H0: rxy= 0
  • H0: µ1(group that does the new program) = µ2(control group 1) =µ3(control group 2)
  • H0: self esteem in the experimental group > self esteem in the control group
  • H0: self esteem in the experimental group  ≠self esteem in the control group
  • H0: self esteem in the experimental group = self esteem in the control group
  • H0: self esteem in the experimental group < self esteem in the control group

 

Question 60.25 pts

What is the alternative hypothesis for scenario 2?

 

Group of answer choices

  • H1: µ1(experimental group) ≠µ2(control group 1)≠µ3(control group 2)
  • H1: self esteem in the experimental group > self esteem in the control group
  • H1: self esteem in the experimental group < self esteem in the control group
  • H1: self esteem in the experimental group ≠self esteem in the control group
  • H1: self esteem in the experimental group = self esteem in the control group
  • H1: rxy = 0

 

 

Question 70.5 pts

What is the independent variable for scenario 2?

 

Group of answer choices

  • The researchers
  • The body-positive exercise program
  • The participants
  • Self esteem
  • There is no IV for this type of analysis

 

Question 80.5 pts

What is the dependent variable for scenario 2?

 

Group of answer choices

  • There is no DV for this type of analysis
  • The body-positive exercise program
  • Self esteem
  • The researchers
  • The participants

 

 

Scenario 3. A manager at a large company wants to know if there is an association between time spent on zoom and ratings of happiness among employees who work from home.

 

 

Question 91 pts

What is the most appropriate test statistic to use to test the hypothesis in scenario 3?

 

Group of answer choices

  • One sample z-Test
  • Regression Analysis
  • Correlation Coefficient
  • P-test
  • Independent samples t-Test
  • One-way ANOVA
  • Z-score
  • F-test
  • Dependent samples t-Test

 

 

 

 

 

 

 

Question 100.5 pts

What is the independent variable for scenario 2?

 

Group of answer choices

  • Happiness
  • Time spent on zoom
  • The type of job they have
  • The participants’ workload
  • There is no IV for this type of analysis

 

Scenario 4. A researcher wants to explore whether stress increases after experiencing sleep deprivation. She measures participants stress levels before and after staying up for one night.

 

 

Question 111 pts

What is the most appropriate test statistic to use to test the hypothesis in scenario 4?

 

Group of answer choices

  • Z-score
  • Correlation Coefficient
  • One sample Z-test
  • T-test for the significance of the correlation coefficient
  • Dependent samples t-Test
  • F-test
  • Independent samples t-Test
  • P-test
  • Regression Analysis
  • One-way ANOVA

 

Question 120.5 pts

What is the null hypothesis for scenario 4?

 

 

 

Question 130.5 pts

What is the alternative hypothesis for scenario 4?

 

 

 

Question 140.5 pts

What is the independent variable for scenario 4?

 

 

 

Question 150.5 pts

What is the dependent variable for scenario 4?

 

 

 

 

Scenario 5. A researcher is interested in examining how different employee-morale boosting activities can influence employee job satisfaction. She randomly assigns different companies to provide one of three possible activities: an employee appreciation lunch, free coffee every Wednesday for a month, or a 20-minute extended lunch break every Friday for a month an then compares employee satisfaction rates between the three companies.

 

 

Question 161 pts

What is the most appropriate test statistic to use to test the hypothesis in scenario 5?

 

Group of answer choices

  • One sample Z-Test
  • P-test
  • Independent samples t-Test
  • Dependent samples t-Test
  • Z-score
  • Regression Analysis
  • Correlation Coefficient
  • One-way ANOVA

 

Question 170.25 pts

What is the null hypothesis for scenario 5?

 

Group of answer choices

  • H0: Mcoffee= µlunch
  • H0: µ1coffee≥ µ2extended lunch
  • H0: µ1coffee ≤µ2extended lunch
  • HO: µ1(lunch) = µ2(coffee) =µ3(extended break)
  • H0: µ1coffee = µ2extended lunch
  • H0: rxy = 0
  • HO: µposttestA = µpretestB

 

 

Question 180.25 pts

What is the alternative hypothesis for scenario 5?

 

 

 

 

Question 190.5 pts

What is the independent variable for scenario 5?

 

Group of answer choices

  • How many years participants have been working at that job
  • The participants
  • The size of the company
  • The type of morale-boosting activity
  • The type of work the employees do at the company
  • Employee job satisfaction

 

Question 200.5 pts

What is the dependent variable for scenario 5?

 

Group of answer choices

  • Employee job satisfaction
  • The type of morale-boosting activity
  • The participants
  • The size of the company
  • How many years participants have been working at that job
  • The type of work the employees do at the company

 

 

 

 

Question 212 pts

Come up with your own study idea, just like the scenarios you see in the questions above. Explain the study (just like in scenarios above), and then tell me the following information for your study. Make sure this is your own original study idea!

IV: 

DV:

Null Hypothesis:

Alternative Hypothesis:

Type of Analysis you would use to test the hypothesis in your study: 

 

 

 

 

 

Question 222 pts

 

Now, pretend you actually ran the study you came up with. Make up the results (the test statistic values, means and SDs), and write up the results as you would see them in an APA style research paper. Note, you do not actually have to do any calculations here! You just need to make up the means and sds for each group, the test statistic value, and the p value and write out the results. You can use the answers to the write up questions on the previous 4 assignments as a template for this!