(a) What is the degrees of freedom and level of significance? 3 (b) Write down the situation where the Chi-square test is applicable? 2 (c) Four samples of items are selected at random from four different sources. The sample size and the number of defective items for each source are shown as (attached image) Test the homogeneity of the proportion of defective items of four sources. (table value is 7.81 at 5% level of significance).
(a) What is the degrees of freedom and level of significance? 3 (b) Write down the situation where the Chi-square test is applicable? 2 (c) Four samples of items are selected at random from four different sources. The sample size and the number of defective items for each source are shown as (attached image) Test the homogeneity of the proportion of defective items of four sources. (table value is 7.81 at 5% level of significance).
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
(a) What is the degrees of freedom and level of significance?
3
(b) Write down the situation where the Chi-square test is applicable?
2
(c) Four samples of items are selected at random from four different sources. The sample size and the number of defective items for each source are shown as (attached image)
Test the homogeneity of the proportion of defective items of four sources. (table value is 7.81 at 5% level of significance).
Transcribed Image Text:Sources
Source 1
Source 2
Source 3
Source 4
Attributes
Defective items
11
18
61
20
Non-defective items
79
95
120
80
Expert Solution
Step 1
Given:
| Attributes\Sources | Source 1 | Source 2 | Source 3 | Source 4 |
| Defective items | 11 | 18 | 61 | 20 |
| Non-Defective items | 79 | 95 | 120 | 80 |
Step by step
Solved in 4 steps
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