Q7. A call center receives an average of 20 calls per hour. The call center uses an automated system to handle these calls, but sometimes the system malfunctions, and there is a 5% chance that the system will fail and will be unable to handle a call. Given that the failure rate is independent of the number of calls, what is the probability that: (a) The system will fail to handle exactly 2 calls in the next hour. [7] The system will fail to handle more than 3 calls in the next hour?