Suppose course evaluation ratings for four college instructors are shown in the following table. Instructor Black Jennings Swanson Wilson 89 87 89 80 80 79 76 83 78 85 69 56 69 83 85 72 96 98 83 88 68 98 85 87 83 84 94 81 82 Use ? = 0.05 and test for a significant difference among the rating for these instructors. State the null and alternative hypotheses. 1. H0: MedianB = MedianJ = MedianS = MedianW Ha: MedianB ≠ MedianJ ≠ MedianS ≠ MedianW 2. H0: MedianB ≠ MedianJ ≠ MedianS ≠ MedianW Ha: MedianB = MedianJ = MedianS = MedianW 3. H0: Not all populations of teaching evaluations are identical. Ha: All populations of teaching evaluations are identical. 4. H0: MedianB = MedianJ = MedianS = MedianW Ha: MedianB < MedianJ > MedianS > MedianW 5. H0: All populations of teaching evaluations are identical. Ha: Not all populations of teaching evaluations are identical. Find the value of the test statistic. (Round your answer to two decimal places.) = Find the p-value. (Round your answer to three decimal places.) p-value = What is your conclusion? 1. Do not reject H0. There is sufficient evidence to conclude that there is a significant difference among the rating for these instructors. 2. Do not reject H0. There is not sufficient evidence to conclude that there is a significant difference among the rating for these instructors. 3. Reject H0. There is not sufficient evidence to conclude that there is a significant difference among the rating for these instructors. 4. Reject H0. There is sufficient evidence to conclude that there is a significant difference among the rating for these instructors.
Suppose course evaluation ratings for four college instructors are shown in the following table. Instructor Black Jennings Swanson Wilson 89 87 89 80 80 79 76 83 78 85 69 56 69 83 85 72 96 98 83 88 68 98 85 87 83 84 94 81 82 Use ? = 0.05 and test for a significant difference among the rating for these instructors. State the null and alternative hypotheses. 1. H0: MedianB = MedianJ = MedianS = MedianW Ha: MedianB ≠ MedianJ ≠ MedianS ≠ MedianW 2. H0: MedianB ≠ MedianJ ≠ MedianS ≠ MedianW Ha: MedianB = MedianJ = MedianS = MedianW 3. H0: Not all populations of teaching evaluations are identical. Ha: All populations of teaching evaluations are identical. 4. H0: MedianB = MedianJ = MedianS = MedianW Ha: MedianB < MedianJ > MedianS > MedianW 5. H0: All populations of teaching evaluations are identical. Ha: Not all populations of teaching evaluations are identical. Find the value of the test statistic. (Round your answer to two decimal places.) = Find the p-value. (Round your answer to three decimal places.) p-value = What is your conclusion? 1. Do not reject H0. There is sufficient evidence to conclude that there is a significant difference among the rating for these instructors. 2. Do not reject H0. There is not sufficient evidence to conclude that there is a significant difference among the rating for these instructors. 3. Reject H0. There is not sufficient evidence to conclude that there is a significant difference among the rating for these instructors. 4. Reject H0. There is sufficient evidence to conclude that there is a significant difference among the rating for these instructors.
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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Suppose course evaluation ratings for four college instructors are shown in the following table.
| Instructor | |||
|---|---|---|---|
| Black | Jennings | Swanson | Wilson |
| 89 | 87 | 89 | 80 |
| 80 | 79 | 76 | 83 |
| 78 | 85 | 69 | 56 |
| 69 | 83 | 85 | 72 |
| 96 | 98 | 83 | 88 |
| 68 | 98 | 85 | 87 |
| 83 | 84 | ||
| 94 | 81 | ||
| 82 |
Use ? = 0.05 and test for a significant difference among the rating for these instructors.
State the null and alternative hypotheses.
1. H0: MedianB = MedianJ = MedianS = MedianW
Ha: MedianB ≠ MedianJ ≠ MedianS ≠ MedianW
Ha: MedianB ≠ MedianJ ≠ MedianS ≠ MedianW
2. H0: MedianB ≠ MedianJ ≠ MedianS ≠ MedianW
Ha: MedianB = MedianJ = MedianS = MedianW
Ha: MedianB = MedianJ = MedianS = MedianW
3. H0: Not all populations of teaching evaluations are identical.
Ha: All populations of teaching evaluations are identical.
Ha: All populations of teaching evaluations are identical.
4. H0: MedianB = MedianJ = MedianS = MedianW
Ha: MedianB < MedianJ > MedianS > MedianW
Ha: MedianB < MedianJ > MedianS > MedianW
5. H0: All populations of teaching evaluations are identical.
Ha: Not all populations of teaching evaluations are identical.
Ha: Not all populations of teaching evaluations are identical.
Find the value of the test statistic. (Round your answer to two decimal places.) =
Find the p-value. (Round your answer to three decimal places.)
p-value =
What is your conclusion?
1. Do not reject H0. There is sufficient evidence to conclude that there is a significant difference among the rating for these instructors.
2. Do not reject H0. There is not sufficient evidence to conclude that there is a significant difference among the rating for these instructors.
3. Reject H0. There is not sufficient evidence to conclude that there is a significant difference among the rating for these instructors.
4. Reject H0. There is sufficient evidence to conclude that there is a significant difference among the rating for these instructors.
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