Scenario 1.A researcher is interested in studying whether a new meditation app can reduce feelings of anxiety. She randomly assigns participants to either use the new app for one week or to not use the app for one week and then compares their anxiety levels.

Flag question: Question 1

Question 1

1pts

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

Group of answer choices

z-test

Structural Equation Model

Dependent samples t-Test

Factor Analysis

Correlation Coefficient

Independent samples t-Test

z-score

One-way ANOVA

Flag question: Question 2

Question 2

0.25pts

What is the null hypothesis for scenario 1?

Group of answer choices

H0: anxiety in app group

anxiety in no app group

H0: rxy= 0

H0: anxiety in app group < anxiety in no app group

H0: anxiety in app group > anxiety in no app group

H0: anxiety in no app group

anxiety in no app group

H0: 1(app) = 2(no app) =3(control)

Flag question: Question 3

Question 3

0.25pts

What is the alternative hypothesis for scenario 1?

Group of answer choices

H1: anxiety in app group = anxiety in no app group

H1: anxiety in app group > anxiety in no app group

H1: anxiety in app group < anxiety in no app group

H1: anxiety in app group

anxiety in no app group

H1: rxy = 0

H1: 1(app) 2no app) 3(control)

Flag question: Question 4

Question 4

0.5pts

What is the independent variable for scenario 1?

Group of answer choices

The researchers

There is no IV for this type of analysis

The participants

Anxiety

Whether or not participants use the new app

Flag question: Question 5

Question 5

0.5pts

What is the dependent variable for scenario 1?

Group of answer choices

Anxiety

There is no DV for this type of analysis

Whether or not participants are using the new app

The participants

The researchers

Flag question: Spacer

Scenario 2:A researcher has recruited a sample of people to participate in a study about physical fitness and heart rate during exercise. They want to make sure that the sample accurately reflects the population in terms of resting heart rate for this age group.

Flag question: Question 6

Question 6

1pts

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

Group of answer choices

Z-score

Correlation coefficient

Dependent samples t test

One sample z-test

One way ANOVA

Independent samples t-test

Regression

Flag question: Question 7

Question 7

0.25pts

What is the null hypothesis for scenario 2?

Group of answer choices

H0: X (population)

(sample)

H0: m1 (sample)

m2 (population)

r > 0

H0: X1 (sample) = X2 (population) = X3 (control)

H0: X (sample) > (population)

H0: X (sample) = (population)

Flag question: Question 8

Question 8

0.25pts

What is the alternative hypothesis for scenario 2?

Group of answer choices

H1: X1 X2 X3

H1: m1 < m2

H1: X

r 0

Flag question: Spacer

Scenario 3.A researcher is interested in examining how sleep quality changed before and after lockdown due to COVID19. She measured sleep quality before and after the lockdown.

Flag question: Question 9

Question 9

1pts

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

Group of answer choices

Regression Analysis

T-test for the significance of the correlation coefficient

Correlation Coefficient

Independent samples t-Test

Z-score

Dependent samples t-Test

F-test

One sample Z-test

One-way ANOVA

P-test

Flag question: Question 10

Question 10

0.5pts

What is the null hypothesis for scenario 3?

Flag question: Question 11

Question 11

0.5pts

What is the alternative hypothesis for scenario 3?

Flag question: Question 12

Question 12

0.5pts

What is the independent variable for scenario 3?

Flag question: Question 13

Question 13

0.5pts

What is the dependent variable for scenario 3?

Flag question: Spacer

Scenario 4.A researcher is interested in examining how exposure to natural light influences mood. She randomly assigns participants to sit in indirect sunlight for zero hours, one hour, or two hours each day for a month, and then compares their mood.

Flag question: Question 14

Question 14

1pts

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

Group of answer choices

Z-score

P-test

Dependent samples t-Test

Correlation Coefficient

Independent samples t-Test

One-way ANOVA

Regression Analysis

One sample Z-Test

Flag question: Question 15

Question 15

0.25pts

What is the null hypothesis for scenario 4?

Group of answer choices

HO: posttestA = pretestB

H0: 1zero hours = 2two hours

H0: 1zero hours

2two hours

H0: 1zero hours

2two hours

HO: 1(zero hours) = 2(1 hour) =3(2 hours)

H0: X1 hour= zero hours

H0: rxy = 0

Flag question: Question 16

Question 16

0.25pts

What is the alternative hypothesis for scenario 4?

Flag question: Question 17

Question 17

0.5pts

What is the independent variable for scenario 4?

Group of answer choices

The time spent in natural light

The participants

The weather outside

The participant's schedules

Mood

Exposure to synthetic light

The participant's diet

Flag question: Question 18

Question 18

0.5pts

What is the dependent variable for scenario 4?

Group of answer choices

The participants

The weather outside

The time spent in natural light

Mood

The participant's diet

The participant's schedules

Exposure to synthetic light

Flag question: Spacer

Scenario 5.A researcher wants to know if there is an association between time spent scrolling through social media before bed and sleep quality. He tracks the time spent on social media prior to sleep and sleep quality for one week.

Flag question: Question 19

Question 19

1pts

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

Group of answer choices

One-way ANOVA

F-test

Dependent samples t-Test

Independent samples t-Test

Z-score

P-test

One sample z-Test

Correlation Coefficient

Regression Analysis

Flag question: Question 20

Question 20

0.5pts

What is the independent variable for scenario 5?

Group of answer choices

The type of social media they are using

The type of phone they have

Sleep quality

Time spent on social media

There is no IV for this type of analysis

Flag question: Question 21

Question 21

2pts

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:

Flag question: Question 22

Question 22

2pts

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.