To reduce the number of plant accidents, ABC Co. implemented a new safety program for employees. To determine its effectiveness, the number of accidents per week was recorded before and after the implementation of the program Week 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th Before 12 10 9 15 11 8 16 13 14 20 After 10 9 12 8 6 10 12 7 5 11 Test at α = -.05 if the new safety program is effective in reducing accidents.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
- To reduce the number of plant accidents, ABC Co. implemented a new safety program for employees. To determine its effectiveness, the number of accidents per week was recorded before and after the implementation of the program
|
Week |
1st |
2nd |
3rd |
4th |
5th |
6th |
7th |
8th |
9th |
10th |
|
Before |
12 |
10 |
9 |
15 |
11 |
8 |
16 |
13 |
14 |
20 |
|
After |
10 |
9 |
12 |
8 |
6 |
10 |
12 |
7 |
5 |
11 |
Test at α = -.05 if the new safety program is effective in reducing accidents.
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