Section C: Long Questions (30 marks) Answer any 2 out of 3 questions. Each question carries 15 marks. Ci. The following shows 30 students who have participated in a SDO activity. Stream Stream Stream Student Number 01 Student Number 11 Student Number 21 IT IT IT 12 IT 22 IT 02 03 BA IT 13 IT BA 23 24 04 IT 14 BA BA 05 15 BA 25 IT BA IT 16 EEEEEEE 26 06 07 IT IT 17 IT 27 BA IT 08 BA 18 IT 28 09 19 29 IT 10 IT 20 BA 30 BA (a) (b) How many IT students and BA students are there? (2 marks) The organizer wants to randomly select 5 students in proportion to the number of students in different streams to join a game. (i) Identify the sampling method used. (2 marks) (ii) How many IT students and BA students should be selected? (2 marks) (iii) Use the Random Number Table below with the starting point row 1 column 3 to identify 5 students. (5 marks) 10 13 1 2 3 4 5 6 7 8 9 Row 1 2 4 9 8 1 7 8 6 1 29 4 1 7 29 0 9 3 3 0 7 1 4 0 1 1 2 1 40 2 7 1 1 0 1 8 0 4 5 7 3 Column 11 12 0 6 1 1 3 7 1 5 9 0 3 0 14 9 8 9 9 15 5 2 7 1 16 9 1 9 7 17 9 0 3 0 18 6 8 3 8 19 20 8 9 1 9 7 9 1 6 (c) A group of 5 students is selected to join the game. How many different groups can be formed if it consists of 2 IT students and 3 BA students? (4 marks) (Total 15 marks)