This class is business operations management. Very stressed right now

Question 1If the mean inter-arrival time of customers arriving at a Starbucks is denoted by "1/)", then the average customer arrival rate (i.e., the average number of customers arriving per hour) is denoted by:- 1/pQuestion 2If the mean service rate (number of customers served per hour) is denoted by "u", then what is the mean service time?. 1/1Question 3If the mean service time is 15 minutes per customer. what is the mean service rate (number of customers served per hour)?2 customers per hour4 customers per hour. 6 customers per hourB customers per hourQuestion 4Assume that the inter-arrival time of customers is exponentially distributed with a mean inter-arrival time of 5 minutes. Determine the mean arrival rate per hour. Also. identify the probability distribution associated with the arrival rate (i.e., distribution associated with the number of customers arriving per hour).Mean arrival rate per hour: [ Select]:Probability distribution: [ Select ] #For the following three questions:Assume that a call center receives an average of 17.5 calls per hour and that it answers an average of 20 calls per hour. Assume M/M/1, unlimited arrivals, and FIFO.Question 5What is the average time a customer is on hold waiting for a service?The answer isminutes per call.Hint: use formula sheet.Question 6What is the average number of people in the system?The answer ispeople.Hint: use formula sheet.Question 7What is the average number of people on hold?The answer ispeople. (calculate to 3 decimal places).Hint: use formula sheet.