"After calculation, round to 4 decimal places"
I think I solved it, but would like expert second opinion, thank you!
"After calculation, round to 4 decimal places" I think I solved it, but would like expert second opinion, thank...
Question 3 Coaching companies claim that their courses can raise the SAT scores of high school students. Of course, students who take the SAT without paying for coaching generally raise their scores, too. A random sample of students who took the SAT twice found 427 who were coached and 2733 who were uncoached. Starting with their Verbal scores on the first and second tries, we have compiled the summary statistics in the table below. Try Try 2 Gain (Try 2-...
Coaching companies claim that their courses can raise the SAT scores of high school students. Of course, students who retake the SAT without paying for coaching generally raise their scores. A random sample of students who took the SAT twice found 427 who were coached and 2733 who were uncoached. Starting with their verbal scores on the first and second tries, we have these summary statistics: Try 1 Try 2 Gain x s x s x s...
Coaching companies claim that their courses can raise the SAT scores of high school students. Of course, students who retake the SAT without paying for coachinggenerally raise their scores. A random sample of students who took the SAT twice found 427 who were coached and 2733 who were uncoached. Starting with their verbalscores on the first and second tries, we have these summary statistics:Try 1 Try 2 Gainx s x s x sCoached 500 92 529 97 29 59Uncoached 506...
33) What we really want to know is whether coached students improve more than uncoached students, and whether any advantage is large enough to be worth paying for. Try 1 Try 2 Gain n x s x s x s Coached 427 500 92 529 97 29 59 Uncoached 2733 506 101 527 101 21 52 (a) Is there good evidence that coached students gained more on the average than uncoached students? (b) How much more do coached students gain...