annie23100
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- Joined
- May 27, 2014
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I need some help on how to solve this question, what approach or rules to use? Im not really sure. Do I need to use hypothesis testing?
A company director took a sample of salaries of 13 employees in a big school during a certain time. she divided the wages into three groups according to the different jobs: teachers, assistants and coordinators as displayed in the table below. She wanted to find out whether or not the means of the salaries classified by the three jobs are significantly different. Let the level of significance be
(a) 5 % and
(b) 1 %.
A company director took a sample of salaries of 13 employees in a big school during a certain time. she divided the wages into three groups according to the different jobs: teachers, assistants and coordinators as displayed in the table below. She wanted to find out whether or not the means of the salaries classified by the three jobs are significantly different. Let the level of significance be
(a) 5 % and
(b) 1 %.
| Workers | 1 | 2 | 3 | 4 | 5 |
| Teachers | 74 | 65 | 72 | 69 | - |
| Assistants | 75 | 78 | 74 | 76 | 72 |
| Coordinators | 56 | 55 | 53 | 52 | - |