(1 point) 3. Last year, the average math SAT score for students at one school was 475. The headmaster
introduced new teaching methods hoping to improve scores. This year, the mean math SAT
score for a sample of students was 481. If the teaching method had no effect, there would be
roughly a 3 in 10 chance of seeing such an increase. Does the result have practical
significance? Why or why not?
O Yes, because there is a difference between a score of 475 and a score of 481
O No, it is possible for the teaching method to have no effect.
O No, the small change in scores is not meaningful to a student
O Yes, the results are too unlikely to occur by chance
UOSO