QUESHON 8 (1D Marks) Hiko Company is hosting an annual Family Day event. Based on past records, the organizing committee noted that the probability of a family of 2, family of 3 and family of 4 attended the event is 60%, 10% and 30% respectively. A sample of 15 staff were selected, calculate the following probabilities: (a) exactly 5 of the staff participate as family of 4. (b) at least 10 of the staff participate as family of 2. (c) at most 2 of the staff participate as family of 3. |