Question
Scenario 1. A researcher is interested in examining whether sleep depravation influences cognitive ability. She randomly assigns a group of college students to either sleep
Scenario 1. A researcher is interested in examining whether sleep depravation influences cognitive ability. She randomly assigns a group of college students to either sleep for 8 hours or 0 hours, and then the following day asks them to complete a series of difficult cognitive tasks.
Flag question: Question 1
Question 1 1 pts
What is the most appropriate test statistic to use to test the hypothesis in scenario 1?
Group of answer choices
Dependent samples t-Test
Correlation Coefficient
z-score
z-test
Factor Analysis
One-way ANOVA
Structural Equation Model
Independent samples t-Test
Flag question: Question 2
Question 2 0.25 pts
What is the null hypothesis for scenario 1?
Group of answer choices
H0: cognitive performance for 0 hour group > cognitive performance for 8 hour group
H0: cognitive performance for 0 hour group H0: rxy = 0 H0: cognitive performance for 0 hour group cognitive performance for 8 hour group H0: cognitive performance for 0 hour group =cognitive performance for 8 hour group H0: 1(o hours) = 2(8 hours) =3(control) Flag question: Question 3 Question 3 0.25 pts What is the alternative hypothesis for scenario 1? Group of answer choices H1: cognitive performance for 0 hour group cognitive performance for 8 hour group H1: 1(o hours) 2(8 hours) 3(control) H1:cognitive performance for 0 hour group < cognitive performance for 8 hour group H1: cognitive performance for 0 hour group > cognitive performance for 8 hour group H1: rxy = 0 H1: cognitive performance for 0 hour group = cognitive performance for 8 hour group Flag question: Question 4 Question 4 0.5 pts What is the independent variable for scenario 1? Group of answer choices Whether participants slept for 0 hours or 8 hours The participants Cognitive ability There is no IV for this type of analysis The researchers Flag question: Question 5 Question 5 0.5 pts What is the dependent variable for scenario 1? Group of answer choices The participants Cognitive ability There is no DV for this type of analysis Whether participants slept for 0 hours or 8 hours The researchers Flag question: Spacer Scenario 2. A researcher wants to know if there is an association between volunteering and feelings of happiness. She expects that spending more time volunteering is associated with higher feelings of happiness. Flag question: Question 6 Question 6 1 pts What is the most appropriate test statistic to use to test the hypothesis in scenario 2? Group of answer choices Correlation Coefficient F-test Independent samples t-Test Z-score Dependent samples t-Test P-test Regression Analysis One sample z-Test One-way ANOVA Flag question: Question 7 Question 7 0.5 pts What is the independent variable for scenario 2? Group of answer choices Happiness There is no IV for this type of analysis The participants' workload The type of job they have Time spent volunteering Flag question: Spacer Scenario 3. A researcher wants to explore how ratings of stress change before and after 30 minutes of aerobic exercise. Flag question: Question 8 Question 8 1 pts What is the most appropriate test statistic to use to test the hypothesis in scenario 3? Group of answer choices One-way ANOVA T-test for the significance of the correlation coefficient One sample Z-test Independent samples t-Test P-test Regression Analysis F-test Dependent samples t-Test Z-score Correlation Coefficient Flag question: Question 9 Question 9 0.5 pts What is the null hypothesis for scenario 3? p0 words Flag question: Question 10 Question 10 0.5 pts What is the alternative hypothesis for scenario 3? p0 words Flag question: Question 11 Question 11 0.5 pts What is the independent variable for scenario 3? p0 words Flag question: Question 12 Question 12 0.5 pts What is the dependent variable for scenario 3? p0 words Flag question: Spacer Scenario 4. A researcher is interested in examining how different types of distracting activities impact how safely participants drive. She randomly assigns participants to engage in one of three types of activities (eating, talking on the phone, and listening to loud music), and compares the number of driving mistakes participants make on a closed driving course. Flag question: Question 13 Question 13 1 pts What is the most appropriate test statistic to use to test the hypothesis in scenario 4? Group of answer choices One-way ANOVA Correlation Coefficient Dependent samples t-Test Independent samples t-Test One sample Z-Test Z-score P-test Regression Analysis Flag question: Question 14 Question 14 0.25 pts What is the null hypothesis for scenario 4? Group of answer choices H0: 1eating 2music H0: 1phone = 2eating H0: rxy = 0 H0: 1phone 2music HO: posttestA = pretestB H0: Meating= music HO: 1(eating) = 2(phone) =3(loud music) Flag question: Question 15 Question 15 0.25 pts What is the alternative hypothesis for scenario 4? p0 words Flag question: Question 16 Question 16 0.5 pts What is the independent variable for scenario 4? Group of answer choices The number of driving mistakes drivers make The participants The type of distracting activity The closed driving course How many years participants had been driving The number of traffic accidents the participants have been in Flag question: Question 17 Question 17 0.5 pts What is the dependent variable for scenario 4? Group of answer choices The closed driving course The type of distracting activity The number of traffic accidents the participants have been in The number of driving mistakes drivers make The participants How many years participants had been driving Flag question: Spacer Scenario 5: A medical school wants to see how the MCAT scores for their new first-year students compare to the MCAT scores for all first year medical students in the country. Flag question: Question 18 Question 18 1 pts What is the most appropriate test statistic to use to test the hypothesis in scenario 5? Group of answer choices Dependent samples t test Independent samples t-test Regression Z-score Correlation coefficient One sample z-test One way ANOVA Flag question: Question 19 Question 19 0.25 pts What is the null hypothesis for scenario 5? Group of answer choices H0: m1 (sample) m2 (population) H0: X1 (sample) = X2 (population) = X3 (control) H0: X (sample) = (population) H0: X (sample) > (population) r > 0 H0: X (population) (sample) Flag question: Question 20 Question 20 0.25 pts What is the alternative hypothesis for scenario 5? Group of answer choices H1: X1 X2 X3 H1: X H1: m1 < m2 r 0 Flag question: Question 21 Question 21 2 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: p0 words Flag question: Question 22 Question 22 2 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! Research methods Create
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