1. Historical data shows that 0.15% of nished products from of a production line is faulty and must be either refurbished or scrapped. You are inspecting a box of 20 units from the latest production batch. What is the expected number of faulty items? a) 10.6 b) 25.0 c) 3.0 d) 4.2 2). A local bar keeps records of Happy Hour (5:00 RM. to 6:00 PM), number of customers arriving. On average, 10 customers arriving during the happy hour. Let's assume these arrivals follow the Poisson distribution. On a given day, what is probability of exactly 9 customers will arrive during the Happy Hour? a) 0.87 b) 0.13 c) 0.25 d) 0.33