2. Express House Delivery Service provides high quality service to customers. The company guarantees a refund of all charges if a package it is delivering does not arrive at its destination by the specified time. It is known from past data that despite all efforts, 2% of the packages mailed through this company do not arrive at their destinations within the specified time. Suppose a corporation mails 10 packages through Express House Delivery Service on a certain day. a) Write down the appropriate probability distribution with its parameters. b) What is the probability that exactly one of these 10 packages will not arrive at its destination within the specified time? c) Find the probability that at most two of these 10 packages will not arrive at its destination within the specified time