A survey of 400 employees has been conducted to determine their views on the quality of service offered by the HR department. The results are given in the table below.
Views of 400 employees about the HR department:
|
Age
|
Offers a good service
|
Offers an average service
|
Offers a poor service
|
|
Under 21
|
34
|
12
|
19
|
|
21-35
|
106
|
17
|
31
|
|
Over 35
|
117
|
40
|
24
|
Describe how you would test whether the views expressed are independent of the age of the employee?
The chi-squared value for the test carried out is 16.12 and at the 1 per cent significance level the value.
Prepare a briefing note for the head of the HR department about the testing process used and the results obtained.