Durable Ceramics, Inc., provides inexpensive ceramic tile to builders of institutional buildings such as schools, prisons, and public administration buildings. It has always competed on a cost leadership basis. Most of its products are purchased by a few commercial construction firms, so it is fairly dependent on these construction firms for selling its product. Durable Ceramic's next most-efficient competitor, Cost-Less Ceramics, Inc., earns average returns, while Durable earns above-average returns. The commercial construction firms are putting pressure on Durable to reduce its prices. If Durable reduces its prices below those of Cost-Less's prices, it is likely that

Which is cheaper: eating out or dining in? the mean cost of a flank steak, broccoli, and rice bought at the grocery store is $13.04 (money.msn website, november 7, 2012). a sample of 100 neighborhood restaurants showed a mean price of $12.75 and a standard deviation of $2 for a comparable restaurant meal. a. develop appropriate hypotheses for a test to determine whether the sample data support the conclusion that the mean cost of a restaurant meal is less than fixing a comparable meal at home. b. using the sample from the 100 restaurants, what is the p-value? c. at a = .05, what is your conclusion? d. repeat the preceding hypothesis test using the critical value approach