1. A researcher is interested to know students' preference towards five language courses offered in a public university. Eight students were randomly selected, and they were asked to rate the courses using a scale of 0 (not interested all) to 10 (very interested), in which results from the ratings do not allow us to assume that the data are normally distributed for each course.The ratings given are shown in the table below.

Course	Malay	English	Arabic	Chinese	Japanese
Student
A	4	5	7	6	4
B	5	5	9	8	6
C	4	9	7	7	8
D	5	9	8	6	7
E	5	8	6	4	7
F	5	7	8	4	6
G	4	8	7	7	5

a. At = 0.05, test the hypothesis that the students have no specific preference for the language course offered using Friedman test.