please answer e,f,g only thanks

CILO 1 - Apply a systematic approach and integrative thinking in making operational decisions (25 points) 1.1. WAITING TIME ANALYSIS. (15 points). A new production line in PT Mugitama Otomasi is considering setting up a technical desk manned by one employee. Based on the information obtained from the production line, it is believed that people will arrive at the technical desk at a rate of 15 per hour or A = 15 people / hour. It takes an average of 3 minutes to answer technical question or u = 60/3 = 20 people/hour. It is assumed that the arrivals follow a Poisson distribution and answer times are exponentially distributed. Assume that the technical desk employee get a salary of Rp 30,000.- per hour. The cost of waiting time in the line or queue, in terms of customer unhappiness with the company, is Rp 45,000.- per hour of time spent waiting in line. Use model 1 (single channel) to calculate (a) to (e): (b) (c) Determine the average number of people waiting in this system or Ls. Determine the average number of people waiting in this queue or Lq. Calculate the expected time for a person spends waiting in this system or Ws. Calculate the expected time for a person spends waiting in the queue or Wq. Calculate the total expected cost for this system over an 8-hour day for single employee which is the sum of 8 hours of employee's salary and 8 hours of customer's cost of waiting in the line. Use model 3 (multi-channel). Do the same calculation from (a) to (e) for S = M = 2 employees. Propose to the company whether to use one or two employees on the technical desk. Justify your