Corbel Corporation has two divisions: Division A and Division B. Last month, the company reported a contribution margin of $47,700 for Division A. Division B had a contribution margin ratio of 35% and its sales were $231,000. Net operating income for the company was $27,200 and traceable fixed expenses were $59,700. Corbel Corporation's common fixed expenses were:

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