McDonald is looking at if their new menu has less calorie than their old menu. Below is the data for 4 menu items.   Old Menu New Menu 487 487 329 322 407 405 236 234 A) What is Md? (2.75 is not the correct answer because I tried it and it got me wrong) B) What is SSd? (2.9861 is not the correct answer because I tried it and it got me wrong as well) C) What is Smd? D) What is df? E) What is negative tcrit for an α=0.05? F) What is tobs? G) Do you reject the null?

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.