1)

Samples of emissions from three suppliers are classied for conformance to air-quality specications. The results from 100 samples are summarized as follows: Conforms Yes No 1 16 14 Supplier 2 25 5 3 30 10 Let A denote the event that a sample is from supplier 1, and let B denote the event that a sample conforms to specications. (b) Determine P(B | A). Round your answer to two decimal places (e.g. 98.76).Customers who are registered on a corporate Web site are summarized by the type of shipping contract they use and the number of orders in the previous month. The number of customers in each category are shown in the following table. Customers are to be selected randomly. Shipping Contract Express Standard Total No orders 25 16 41 One order 65 41 106 More than one order 44 24 68 (b) What is the conditional probability that the customer uses express shipping given that the customer had at least one order last month? Round your answer to three decimal places [e.g. 98.765)