Question: a&b Case: Consider an espresso stand with a single barista Customers arrive at the stand at the rate of 28 per hour according to a

a&b

Case: Consider an espresso stand with a single barista Customers arrive at the stand at the rate of 28 per hour according to a Poisson distribution. Service times are exponentially distributed with a service rate of 35 customers per hour. 50 points a. The probability that the server is idle is Petunjuk: Format harus dalam bilangan integer. Tidak ada desimal. Bulatkan ke integer terdekat. Contoh: hasil kalkulasi 45% --> tulis di Form = 45 (simbol % tidak perlu ditulis lagi, sudah ada di soal). Your answer 50 points b. The average time in minutes a customer spends in the system (i.e. waiting and being served) is O 8.58 minutes O 0.143 minute O 6.84 minutes O 0.114 minute

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