10. Stone Industries has three product lines: X, Y and Z. The following information is available: Product X Product Y Product Z Sales $100,000 $70,000 $44,000 Variable costs 76,000 48,000 30,000 Contribution margin 24,000 22,000 14,000 Avoidable fixed costs 9,000 18,000 3,000 Unavoidable fixed costs 6,000 6,000 7,700 Operating income(loss) $9,000 $(2,000) $3,300 Stone Industries is thinking about dropping Product Y because it is reporting a loss. Assume Stone Industries drops Product Y and does not replace it. What will happen to operating income

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