Determine whether employees performance can be judged stable

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Reference no: EM131384729

Every employee in a check-processing department goes through a four-month training period, after which the employee is responsible for their operation. The work of one employee who has been on the job for eight months is being studied. Given Table shows the number of errors and the number of items sampled over a period of two months.

The first 16 samples were each chosen from 400 items, and the remaining 9 samples were each chosen from 300 items. Determine whether the employee's performance can be judged stable. Comment on the capability of the employee.

Sample

Errors

Items Sampled

Sample

Errors

Items Sampled

1

12

400

14

18

400

2

9

400

15

8

400

3

13

400

16

6

400

4

7

400

17

4

300

5

6

400

18

6

300

6

10

400

19

5

300

7

14

400

20

8

300

8

7

400

21

10

300

9

5

400

22

7

300

10

6

400

23

4

300

11

4

400

24

5

300

12

9

400

25

3

300

13

11

400

 

 

 

Reference no: EM131384729

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