6. two separate samples receive different treatments. after treatment, the first sample has n = 9 with ss = 462, and the second has n = 7 with ss = 420. a. compute the pooled variance for the two samples. b. calculate the estimated standard error for the sample mean difference. c. if the sample mean difference is 10 points, is this enough to reject the null hypothesis using a two-tailed test with α = .05? gravetter, frederick j. statistics for the behavioral sciences (p. 329). cengage learning. kindle edition.

Efficient homemakers ltd. makes canvas wallets and leather wallets as part of a money-making project. for the canvas wallets, they need two yards of canvas and two yards of leather. for the leather wallets, they need four yards of leather and three yards of canvas. their production unit has purchased 44 yards of leather and 40 yards of canvas. let x be the number of leather wallets and y be the number of canvas wallets. draw the graph showing the feasible region to represent the number of the leather and canvas wallets that can be produced.