2. [2 marks] Find the probability that the customer-special at the Purdy Restaurant will be Ceasar Salad for at least 3 of the next 5 days if the probability that the special is Ceasar Salad is 40% on any given day. 3. [2 marks] Find the probability that the first time this week that the customer-special at the Purdy Restaurant will be Ceasar Salad will be in three days if the probability that the special is Ceasar Salad is 40% on any given day. 4. [2 marks] Suppose that the average number of times that chicken is the customer-special at the Purdy restaurant is 3 times each week, what is the probability that chicken will be the special only two times next week? 5. [8 marks] Suppose we know that customers arrive at an average rate of 10 per 30 minute period at the Purdy restaurant. a. What is the probability that exactly 20 customers will arrive in a given one hour period? b. What is the probability that less than 30 customers will arrive in a given two hour period