office support, inc. provides on-site repair for most large photocopy machines. it currently has five trained repair teams that it sends out on an on-call basis. since the company advertises one-day service, it will not accept more than five requests for service per day. two months ago, the vice president started considering expanding the workforce. at that time he asked the call desk to record the actual calls for each of the next 40 days. the data to respond to the questions below are provided in the office worksheet. define the random variable x as the number of service calls per day. clearly x is a discrete random variable.