A therapist was interested in determining whether patients experiences reduced anxiety following diaphragmatic breathing exercises. She includes 9 participants in her brief study. Each patient provides a rating for current anxiety, on a scale of 1 (least anxiety) to 10 (extreme anxiety). She then instructs them on a 45-minute diaphragmatic breathing exercise. Following the exercise, each patient again rates his/her anxiety on the same 1- 10 scale. (Note that this is a repeated measures study because each patient/participant is measured twice, once before the treatment and once after the treatment.) Before After Patient treatment treatment A B 7 5 с 6 6 111 D 7 6 E 9 7 F 8 5 G 4 H I 1. Can the therapist conclude that there was a significant change in anxiety levels after treatment? Use a two-tailed test with a = .05. (Note that you will need to use - and clearly show - all 4 steps of hypothesis testing to answer this question.) 2. Compute the value of r' (percentage of variance accounted for) for these data. 3. Write a sentence showing how the outcome of the hypothesis test and the measure of effect size would appear in a research report (i.e., in APA format). Note that you can find an example of APA format for a repeated measures t-test both in your book, in the "In the Literature" section of chapter 11 on page 372, and in the example I provided in this week's resources. APA format is slightly different depending on the type of test used, so be sure to look for an example of a repeated-measures t-test!
A therapist was interested in determining whether patients experiences reduced anxiety following diaphragmatic breathing exercises. She includes 9 participants in her brief study. Each patient provides a rating for current anxiety, on a scale of 1 (least anxiety) to 10 (extreme anxiety). She then instructs them on a 45-minute diaphragmatic breathing exercise. Following the exercise, each patient again rates his/her anxiety on the same 1- 10 scale. (Note that this is a repeated measures study because each patient/participant is measured twice, once before the treatment and once after the treatment.) Before After Patient treatment treatment A B 7 5 с 6 6 111 D 7 6 E 9 7 F 8 5 G 4 H I 1. Can the therapist conclude that there was a significant change in anxiety levels after treatment? Use a two-tailed test with a = .05. (Note that you will need to use - and clearly show - all 4 steps of hypothesis testing to answer this question.) 2. Compute the value of r' (percentage of variance accounted for) for these data. 3. Write a sentence showing how the outcome of the hypothesis test and the measure of effect size would appear in a research report (i.e., in APA format). Note that you can find an example of APA format for a repeated measures t-test both in your book, in the "In the Literature" section of chapter 11 on page 372, and in the example I provided in this week's resources. APA format is slightly different depending on the type of test used, so be sure to look for an example of a repeated-measures t-test!
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
Transcribed Image Text:. Verizon
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Instructions:
• Show all work, including every calculation and every
formula, with proper symbols. Formulas must be those
used in the required textbook for the course.
• Use the t-table in your book to find the critical t value(s).
• Calculators are fine; computer software of any kind is
NOT. (You are welcome to use SPSS to check your
work, but all values generated/reported below must
come from hand calculations or the t table: your
book.)
Patient
A
B
C
D
E
F
G
H
I
A therapist was interested in determining whether patients
experiences reduced anxiety following diaphragmatic breathing
exercises. She includes 9 participants in her brief study. Each
patient provides a rating for current anxiety, on a scale of 1
(least anxiety) to 10 (extreme anxiety). She then instructs them
on a 45-minute diaphragmatic breathing exercise. Following the
exercise, each patient again rates his/her anxiety on the same 1-
10 scale. (Note that this is a repeated measures study because
each patient/participant is measured twice, once before the
treatment and once after the treatment.)
Before
treatment
8
7
6
7
9
8
5
9
7
After
treatment
7
5
6
3:51 PM
Chapter 11 Problem
6
7
5
4
4
4
1. Can the therapist conclude that there was a significant
change in anxiety levels after treatment? Use a two-tailed
test with a = .05. (Note that you will need to use - and
clearly show - all 4 steps of hypothesis testing to answer
this question.)
2. Compute the value of r' (percentage of variance accounted
for) for these data.
3. Write a sentence showing how the outcome of the
hypothesis test and the measure of effect size would appear
in a research report (i.e., in APA format). Note that you
can find an example of APA format for a repeated measures
t-test both in your book, in the "In the Literature" section of
chapter 11 on page 372, and in the example I provided in
this week's resources. APA format is slightly different
depending on the type of test used, so be sure to look for an
example of a repeated-measures t-test!
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