Question 3 A nursery sells four different kinds of flowering plants. It has documented the purchases of the last 250 customers and found that 45 bought orchids, 55 bought tulips, 60 bought marigolds and 40 bought roses. The nursery also sells fertilizer. A total of 70 customers bought no fertilizer at all and 30 customers bought neither fertilizer nor plants. Show all your workings in full. Your final answers must be accurate to three decimal places. 3.1 Given the fact that a customer bought a plant, what is the probability that it is an orchid? (2) 3.2 What is the probability that a customer bought no plants? (2) 3.3 What is the probability that a customer either buys no plants or buys no fertilizer? (4) 3.4 What is the probability that a customer buys plants and fertilizer? (2)