The data inChapter 13 Data Set 3 were collected by a researcher who wants to know whether the amount of stress is different for three groups of employees. Group 1 employees work the morning/day shift, Group 2 employees work the day/evening shift, and Group 3 employees work the night shift. The null hypothesis is that there is no difference in the amount of stress between groups.

Shift Stress

1 7

1 7

1 6

1 9

1 8

1 7

1 6

1 7

1 8

1 9

1 5

2 6

2 3

2 5

2 4

2 6

2 5

2 4

2 5

2 5

2 6

2 7

2 6

2 1

3 3

3 4

3 3

3 1

3 1

3 2

3 6

3 5

3 4

3 3

3 4

3 5

3