Chi-square There are 4 TV sets at the student center of a large university lounge. At a particular time of each day, four different soap operas (namely 1, 2, 3 and 4) are being transmitted at these TV...

Chi-square

There are 4 TV sets at the student center of a large university lounge. At a particular time of each day, four different soap operas (namely 1, 2, 3 and 4) are being transmitted at these TV sets. The attending number of students viewing the 4 soap operas are 80, 88, 79 and 53. The percentage of audience captured by these shows during one semester after the summer break are 25%, 30%, 25% and 20%, respectively. The survey consists of 300 students.

a) if the viewing pattern has not changed, what number of students is expected to watch each soap opera?

b)using descriptive statistics, show the relative frequency of students watching each soap opera before the break

c)test at 1% significance level, if these numbers indicate a change in watching behaviour.