Before Deep Breathing

20

19

15

13

13

12

11

After deep breathing

14

15

15

10

8

7

2

Flag question: Question 1

Question 1

0.5pts

What's the null hypothesis for this research question?

Group of answer choices

Ha: Anxiety levels are significantly lower after deep breathing

Ho: Anxiety levels are the same before and after deep breathing

Flag question: Question 2

Question 2

0.5pts

What's the alternative hypothesis for this research question?

Group of answer choices

Ha: Anxiety levels are significantly lower after deep breathing

Ho: Anxiety levels are the same before and after deep breathing

Flag question: Question 3

Question 3

1pts

What's the best statistical test to use to analyze this research question?

Group of answer choices

One sample z-test

Independent sample t-test

F statistic

Dependent samples t-test

Correlation coefficient

One way ANOVA

Flag question: Question 4

Question 4

1pts

The next step is to compute the test statistic. What is the t-statistic value (make sure you're using the t-test formula for the dependent samples t-test).

Flag question: Question 5

Question 5

2pts

Now, you tell me: what are the degrees of freedom?

Flag question: Question 6

Question 6

1pts

Should you do a one-tailed or two-tailed test here? Think about whether the hypothesis is directional or non-directional!

Group of answer choices

one tailed

two tailed

Flag question: Question 7

Question 7

2pts

What is the critical value?

Flag question: Question 8

Question 8

1pts

Based on the t-value provided and the critical value, what is your decision about this research study?

Group of answer choices

There is a significant decrease in anxiety after deep breathing

There is not a significant decrease in anxiety before and after deep breathing.

Flag question: Question 9

Question 9

1pts

Explain when you would you use a dependent samplest-Test rather than an independent samplet-Test? What are the benefits and problems with each design? Be specific!