2. Allied Foods, Inc. suspected that a new recipe for chocolate cake mix would result in a thicker cake. Thirty-four cooks were asked to use the new recipe (A) and the old recipe (B). The difference (x) between thicknesses was recorded in each case (x = XA - X8). The results were x = .15 inch and s = 09 inch. At the 1% level of significance, does recipe A result in thicker cake