Question
In: Statistics and Probability
(1). Use the Wilcoxon matched-pairs signed rank test (small sample size) to determine whether there is...
- (1). Use the Wilcoxon matched-pairs signed rank test (small sample size) to determine whether there is a significant difference between the related populations represented by the matched pairs given here. Assume a = .05 (Written).
|
Group1 |
Group2 |
d |
|
5.6 |
6.4 |
-0.8 |
|
1.3 |
1.5 |
-0.2 |
|
4.7 |
4.6 |
0.1 |
|
3.8 |
4.3 |
-0.5 |
|
2.4 |
2.1 |
0.3 |
|
5.5 |
6 |
-0.5 |
|
5.1 |
5.2 |
-0.1 |
|
4.6 |
4.5 |
0.1 |
|
3.7 |
4.5 |
-0.8 |
Solutions
orchestra answered 2 years agoRelated Solutions
Use the Wilcoxon matched-pairs signed rank test to determine whether there is a significant difference between...
Use the Wilcoxon matched-pairs signed rank test to determine
whether there is a significant difference between the related
populations represented by the data below. Assume a 5% level of
significance and (differences = before - after).
Before After
5.6 6.4
1.3 1.5
4.7 4.6
3.8 4.3
2.4 2.1
5.5 6.0
5.1 5.2
4.6 4.5
3.7 4.5
What is the value of T-?
What is the value of T+?
What is the test statistic, T?
Using the table of Critical Values, what is the critical value for
this study?
Detail the steps in computing the Wilcoxon matched-pairs signed-rank test with a brief discussion specific to...
Detail the steps in computing the Wilcoxon matched-pairs
signed-rank test with a brief discussion specific to the important
aspects of each step.
Detail the steps in computing the Wilcoxon matched-pairs signed-rank test with a brief discussion specific to...
Detail the steps in computing the Wilcoxon matched-pairs
signed-rank test with a brief discussion specific to the important
aspects of each step.
Discuss the type of data required for both the paired t-test and the Wilcoxon matched pairs signed-rank...
Discuss the type of data required for both the paired t-test and
the Wilcoxon matched pairs signed-rank test.
WILCOXON SIGNED RANK TEST (a)2 Describe the Wilcoxon signed rank test briefly. How does it do...
WILCOXON SIGNED RANK TEST
(a)2 Describe the Wilcoxon signed rank test briefly. How does it do
it?
(b)2 State the null and the alternative hypothesis.
(c)2 State the assumptions.
(d)2 State the formula for the test statistic.
(e)2 State the rejection rule with (How to reject the null
hypothesis)
(f)5 Give an real life example of how we can use the Wilcoxon
signed rank test (with calculations).
Nonparametric Methods In this assignment, we will use the following nonparametric methods: The Wilcoxon signed-rank test:...
Nonparametric Methods
In this assignment, we will use the following nonparametric
methods:
The Wilcoxon signed-rank test: The Wilcoxon signed-rank test is
the nonparametric test analog of the paired t-test.
The Wilcoxon rank-sum test or the Mann-Whitney U test: The
Wilcoxon rank-sum test is an analog to the two-sample t-test for
independent samples.
Part 1: Wilcoxon Signed-Rank Test
Let's take a hypothetical situation. The World Health
Organization (WHO) wants to investigate whether building irrigation
systems in an African region helped reduce...
Preliminary data analyses indicates that use of a paired Wilcoxon signed-rank test is reasonable. Perform the...
Preliminary data analyses indicates that use of a paired
Wilcoxon signed-rank test is reasonable. Perform the hypothesis
test by using a paired Wilcoxon signed-rank test. Assume that the
null hypothesis is Ho:u1=u2
In a study of the effectiveness of physical exercise in weight
reduction, 12 subjects followed a program of physical exercise for
two months. Their weights (in pounds) before and after this program
are shown in the following table.
before
162
190
188
152
148
127
195
164...
The nonparametric counterpart of ANOVA is the ________. a. Wilcoxon signed-rank test b. Sign test c. Runs test d. None of the above
The nonparametric counterpart of ANOVA is the ________.a. Wilcoxon signed-rank testb. Sign testc. Runs testd. None of the above
For each of the following nonparametric tests––Wilcoxon signed-rank test, Mann–Whitney U test, and Spearman’s rho––discuss the...
For each of the following nonparametric tests––Wilcoxon
signed-rank test, Mann–Whitney U test, and Spearman’s rho––discuss
the following points:
Give an overview of the test.
State what parametric test it replaces.
Provide an example of when you would choose to use that
test.
P-value calculations. 1. A) Use a t-test of comparative pairs to determine whether there is a...
P-value calculations.
1. A) Use a t-test of comparative pairs to determine whether
there is a statistically significant difference in the number of
rat discoveries observed before and after a major disposal
operation in nine areas. Calculate p-value.
Area
Rat discovery before
Rat discovery after
Area 1
35
23
Area 2
51
55
Area 3
78
60
Area 4
24
20
Area 5
19
22
Area 6
33
31
Area 7
90
78
Area 8
26
23
Area 9
43...
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