7. Binomial Distribution - A manufacturer of machined aircraft components has an average of 13% tolerance failures. What is the probability that a batch of 15 pistons has? a). No more than two rejects b). At least two rejects (show workings clearly) 2. A newsagent sells the local newspaper. You may assume the daily demand follows a Poisson distribution with a mean 15. The newsagent begins each day with 20 copies to sell. a) Calculate the probability that on a randomly chosen day, the newsagent sells i. 12 copies of the newspaper ii. All 20 copies of the newspaper.

7. Binomial Distribution - A manufacturer of machined aircraft components has an average of 13% tolerance failures. What is the probability that a batch of 15 pistons has? a). No more than two rejects b). At least two rejects (show workings clearly) 2. A newsagent sells the local newspaper. You may assume the daily demand follows a Poisson distribution with a mean 15. The newsagent begins each day with 20 copies to sell. a) Calculate the probability that on a randomly chosen day, the newsagent sells i. 12 copies of the newspaper ii. All 20 copies of the newspaper.