(a) A study was made by a university on the job preference of their graduates. One of the objective is to determine the dependencies of gender and job preferences (technical and non-technical). The researcher took a random sample of 300 graduates and perform a survey on their job preference. The data have been taken and recorded as shown in Table Q4 (a). Table Q4 (a): Graduates job preference based on gender and job preferences Job Preference Technical Non-technical Gender Male 140 80 Female 30 50 (i) Calculate the expected value a and the Chi Square value b, c and d, hence complete Table Q4 (a(1)). Table Q4 (a(1)): Table of observed and expected values Observed Values, (O) Expected Values, (E) (0-E) E 140 124.6667 b 80 95.3333 2.4662 30 3.3333 50 34.6667 C x' = d [7 marks] (ii) Decide whether the gender of graduates and their job preference are related at 1% significance level. [5 marks]