a. What is the dependent (outcome) variable? What is the independent (grouping) variable? b. Create the null and alternative hypotheses for this study, using both words and symbol notation. c. Using jamovi, present the calculated values for the means of the two groups (MA and MB), their mean difference, and the standard deviation (SE diff) of the comparison distribution.
a. What is the dependent (outcome) variable? What is the independent (grouping) variable? b. Create the null and alternative hypotheses for this study, using both words and symbol notation. c. Using jamovi, present the calculated values for the means of the two groups (MA and MB), their mean difference, and the standard deviation (SE diff) of the comparison distribution.
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
Kindly answer in typewritten form
Transcribed Image Text:a. What is the dependent (outcome) variable? What is the independent (grouping)
variable?
b. Create the null and alternative hypotheses for this study, using both words and
symbol notation.
c. Using jamovi, present the calculated values for the means of the two groups (MA
and MB), their mean difference, and the standard deviation (SE diff) of the comparison
distribution.
d. What is the t statistic and its corresponding p value?
e. Do we "reject" or "fail to reject" the null hypothesis? Interpret your decision by
answering the research question.
f. Supporting Screenshot
Transcribed Image Text:Q3)
Independent-Samples t-Test
In a cognitive psychology experiment, the researcher is interested in whether
encoding condition has a significant effect on memory for a set of drawings. In
encoding condition A, subjects are asked to name the object in each drawing; in
encoding condition B, subjects are asked to name the color of each drawing. Then all
subjects are tested on their memory of the drawings. Each recruited subject is
randomly assigned to either encoding condition A or encoding condition B.
Based on memory theories, the researcher hypothesized that condition A (object
naming) would lead to significantly better memory compared to condition B (color
naming), and she sets the significance level at a = .05 for a one-tailed test.
Subject
ID
1
2
3
4
5
6
7
8
9
10
11
12
Encoding
A
87
80
78
76
86
77
83
82
91
90
95
83
Subject Encoding B
ID
13
14
15
16
17
18
19
20
21
22
23
24
85
80
76
77
86
68
85
79
89
85
82
80
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