1. Supermarket Faris sells Palestinian brands of coffee and its own brand. If the probability of any coffee buyer to sel

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1 Supermarket Faris Sells Palestinian Brands Of Coffee And Its Own Brand If The Probability Of Any Coffee Buyer To Sel 1 (124.48 KiB) Viewed 16 times

1. Supermarket Faris sells Palestinian brands of coffee and its own brand. If the probability of any coffee buyer to select a Palestinian brand is 0.7, then if X is the number of coffee purchasers who selected a Palestinian brand out of a total of 20 coffee purchasers selected randomly: a. Find p(x=15) b. Find the probability that at least 18 customers bought Palestinian coffee. c. Find the probability that between 15 and 18 bought a Palestinian coffee. 2. The number of defective products (X) in a production line is said to be rare and have Poisson distribution with X = 5. a. Find the probability that exactly two products are defectives. b. Find the probability that at most two products are defectives.