4. A university is about to buy a new 3D printer. There are two alternatives available. a. The HP printer which is more expensive to buy but also faster. b. The Canon printer which is cheaper but slower Processing times and times between job arrivals are exponential > M/M/1 model. . 1 = 10 jobs per day . MHP = 20 jobs per day . He = 15 jobs per day The buying and waiting costs: . buying price: CHP = $15000, Cc = $10000 . The waiting cost per job and time unit is estimated to be $500 per job and day. Which printer should the university choose in order to minimize the expected costs?

Fig: 1