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?

Yes, because there is a difference between a score of 475 and a score of 481.
Yes, the results are too unlikely to occur by chance.
No, it is possible for the teaching method to have no effect.
No, the s

Question

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?
 	
	Yes, because there is a difference between a score of 475 and a score of 481.
	Yes, the results are too unlikely to occur by chance.
	No, it is possible for the teaching method to have no effect.
	No, the s

anonymous · Answer

d) No, the small change in scores is not meaningful to a student

anonymous · Answer

@Er.Mohd.AMIR