3. (10) (a) An automobile sales training course is expected to increase an individual's volume of sales. The industry gives awards to those salesmen who achieve a certain level of sales. The following table classifies 100 car salesmen who attended the course or received industry awards in the past year. Table A Award Status Attended Did Not Attend Received 20 12 (i) Did Not Receive 32 36 State the null and alternative hypothesis for testing the hypothesis that attending or not attending the course has no effect on whether a salesman wins or doesn't win an industry award. Calculate the expected frequencies for all cells assuming that the null hypothesis is true. (ii) (b) Based on the above: (10) For a = 0.01, obtain the critical value of chi-square. Show the rejection and non rejection regions on the chi-square distribution curve. (ii) Using a = 0.01, would you reject the null hypothesis? (Total/ Jumlah: 20) (Maximum 3 pages/ Maksima 3 mukasurat) 3. (10) (a) An automobile sales training course is expected to increase an individual's volume of sales. The industry gives awards to those salesmen who achieve a certain level of sales. The following table classifies 100 car salesmen who attended the course or received industry awards in the past year. Table A Award Status Attended Did Not Attend Received 20 12 (i) Did Not Receive 32 36 State the null and alternative hypothesis for testing the hypothesis that attending or not attending the course has no effect on whether a salesman wins or doesn't win an industry award. Calculate the expected frequencies for all cells assuming that the null hypothesis is true. (ii) (b) Based on the above: (10) For a = 0.01, obtain the critical value of chi-square. Show the rejection and non rejection regions on the chi-square distribution curve. (ii) Using a = 0.01, would you reject the null hypothesis? (Total/ Jumlah: 20) (Maximum 3 pages/ Maksima 3 mukasurat)