Question

to see if buying the book helps pass a statistics class 20 students are randomly selected to take the class with the book, and 20 students are randomly selected to take the class without the book. at the end of the class the average grades are compared.

Answer 1

The subject of this question is Mathematics and the grade level is College. The question asks if buying the book helps pass a statistics class, and examples from a professor's study and a college study comparing science and humanities students are used to explain the concept of comparing outcomes between groups. To answer the question, we need to compare the average grades of the two groups and analyze if there is a significant difference.

Step-by-step explanation:

The subject of this question is Mathematics and the grade level is College.

This question is asking if buying the book helps pass a statistics class. The professor in Example 10.3 wanted to determine whether there is a difference in the means of final exam scores between students who took his statistics course online and the students who took his face-to-face statistics class. Similarly, in the college study mentioned, random samples of science and humanities students were drawn to compare how much they spent on textbooks. In both cases, the goal was to compare the outcomes of two different groups.

To answer the question, we need to compare the average grades of the two groups: the 20 students who took the class with the book and the 20 students who took the class without the book. We can calculate the mean of each group's grades and compare them to see if there is a significant difference.