a company produces packages of granola and has changed it recipe. it claims that the proportion of almonds in the new recipe is greater than in the previous recipe. in order to test this claim, you take a 100-gram sample from the old recipe and a 100-gram sample from the new recipe. The old recipe sample contains 29 grams of almonds, while the new recipe sample contains 42 grams of almonds. How is the appropriate test statistic calculated