QUESTION 4 (a) Brother's Company sells several brands of imported used cars. In every half year, the customer service department will present the average number of customers' complaints towards the used car they had bought. The average number of complaints received is ve per month. (i) Name the probability distribution used by the customer service department. Hence, find the standard deviation of the case study. (ii) Find the probability of exactly ve customers complaint in a month. (iii) Find the probability of no complaint received in the last one month. (iv) Find the probability of at most 14 customers complaint in three months