July 12 Rockland sold merchandise to Kristina Zee at its factory store. Kristina paid for the $455 purchase in cash. The goods cost Rockland $265. 15 Sold merchandise to Shoe Express at a selling price of $9,500, with terms n/30. Rockland's cost was $4,900. 23 Shoe Express returned $2,300 of the shoes purchased July 15. The returned shoes were in perfect condition and had cost Rockland $1,250. 31 Shoe Express paid the balance owing after July 15 and 23.

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