A Psychologist was interested in whether TV shows lead to a more positive outlook in human life. People were split into 4 groups and taken into a room to view a programme. The four groups saw the yolo show, BBC news, rhythms and the rundown. After the programme, a blood sample was taken and the serotonin levels measured (more serotonin means more happy). The table below shows the result of serotonin levels for each group

Yolo show

BBC news

Rhythms

Rundown

11

4

4

7

7

8

3

7

8

6

2

5

14

11

3

4

11

9

6

9

10

8

3

5

11

3

x (yolo) = 9.4286

x (BBC) = 7.6667

x (rhythms) = 3.6

x (rundown) = 6.125

xi-x 2 = 53.71

xi-x 2 = 29.33

xi-x 2 = 9.20

xi-x 2 = 58.88

From the table above assist the Psychologist to determine the level of difference in positive outlook in human life by answering the following questions

a. State the appropriate hypothesis for the level of positive outlook in human life