Fill in the blanks to complete the A school district decides to compare a new math textbook with the textbook that has been used for the past few years. Each of the fourth graders in one school is randomly assigned to be in one of two classes, one in which a teacher continues using the old book and another in which a new teacher uses the new book. The school administrators compare the average scores of the two classes on a mathematics standardized test at the end of the year and find that the class with the new textbook performed better on the test. Which of the following, if they occurred, could be potential confounds in the study? Confound(s) Both classes have children who report that they do not like math. Press Space to open The class using the new textbook is smaller than the class using the old textbook. Press Space to open The teacher using the new book has more teaching experience. Press Space to open There are different children in the fourth grade this year than there were last year. Press Space to open Not Confound(s) about an example of biased thinking. Sana reads a post on