Exercise 9.53.The manager of a restaurant believes that waiters and waitresses who introducethemselves by telling customers their names will get larger tips than those who don't. In fact, she claimsthat the average tip for the former group is 18%, whereas that of the latter is only 15%. If tips arenormally distributed with a standard deviation of 3%, what is the probability that in a random sampleof 10 tips recorded from waiters and waitresses who introduce themselves and