**Research Scenario and Statistical Analysis**A researcher is interested in seeing if listening to a political debate changes anxiety scores among people. The researcher knows from previous research that women generally score higher levels of anxiety.The hypothesis predicted whether anxiety scores would be raised or lowered. Participants were given an anxiety test before and after listening to the political debate. Below are the data for four participants:| Participant | Time 1 (X₁) | Time 2 (X₂) ||-------------|------------|-------------|| A | 20 | 24 || B | 22 | 26 || C | 10 | 12 || D | 18 | 20 |**Questions:**a) State the researcher's null and alternative hypotheses (using symbols OR everyday language).b) Is this a one or a two-tailed test?c) Find the critical value (alpha = .05).d) Compute the observed test statistic (remember to show your work).e) Based on the information above, what is your statistical conclusion?

A B C D 12 20 10 10 32856 24 18 a.) State the researcher's null and alternative hypotheses (using symbols OR everyday language) b.) Is this a one or a two-tailed test? c.) Find the critical value (alpha = .05) I

A B C D 12 20 10 10 32856 24 18 a.) State the researcher's null and alternative hypotheses (using symbols OR everyday language) b.) Is this a one or a two-tailed test? c.) Find the critical value (alpha = .05) I

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

**Research Scenario and Statistical Analysis**

A researcher is interested in seeing if listening to a political debate changes anxiety scores among people. The researcher knows from previous research that women generally score higher levels of anxiety.

The hypothesis predicted whether anxiety scores would be raised or lowered. Participants were given an anxiety test before and after listening to the political debate. Below are the data for four participants:

| Participant | Time 1 (X₁) | Time 2 (X₂) |
|-------------|------------|-------------|
| A | 20 | 24 |
| B | 22 | 26 |
| C | 10 | 12 |
| D | 18 | 20 |

**Questions:**

a) State the researcher's null and alternative hypotheses (using symbols OR everyday language).

b) Is this a one or a two-tailed test?

c) Find the critical value (alpha = .05).

d) Compute the observed test statistic (remember to show your work).

e) Based on the information above, what is your statistical conclusion?

Expert Solution

Step 1

It is given that the researcher gathers a sample of size n = 4 and gives these participants an anxiety test before and after listening to the political debate.

Note: According to Bartleby expert guidelines, we can answer only first question with their three subparts and rest can be reposted.

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