Explanation for Question 5 From the Math (Calc) Section on the 2019 April Sat
So number five, isn't a math question that involves numbers and calculations. 2 It's a question that talks about experimental design and what you can do with 3 the results from that experiment. So a scientist conducted an experiment and selected 4 a random sample of runners from a list of all high school track participants 5 from a certain city. The scientist randomly assigned each runner to one of two 6 treatment groups. And the results of the experiment were found to be statistically significant. 7 So which of the following populations can the result of the experiment be safely 8 generalized? So whenever you conduct a study, 9 you can only generalize the results of that study to whatever you sampled 10 from. So in this case, we sampled from runners from a list of all 11 high school track participants from a certain city. 12 So that means whatever results we get, 13 we can only apply to high school track participants from that same city. 14 So a lot of these answers are too broad, 15 all runners everywhere. That means all across the world, 16 all ages. That is definitely way too broad, 17 same thing with all high school athletes. 18 Since we sampled from a certain city, we can only apply it to those 19 athletes from that same city and same thing here, 20 country is way too broad. So the answer is going to be B. 21 We can only apply the results of the study to the group from 22 which it was sampled from.