3. A restaurant serves an average of 180 customers per hour during the lunch time. [points: 1+2+2+2=7] (a). What probability distribution is most appropriate for calculating the probability of a given number of customers arriving within one hour during lunch time? (b). What are the mean and the standard deviation of the number of customers this restaurant serves in one hour during lunch time? (c). Would it be considered unusually low if only 150 customers showed up to this restaurant in one hour during lunch time?(d). Calculate the probability that this restaurant serves 170 customers in one hour during lunch time? 4. For Poisson distribution with 1 = 10, what is the probability that k