Question: Question 2 0 pts Seven students take a speed reading course in order to improve their reading ability. The reading scores of the seven before

Question 2 0 pts Seven students take a speed reading course in order to improve their reading ability. The reading scores of the seven before and after taking the course are given below: Person 2 4 . 5 6 x Test Score (Before) 350 371 360 400 450 389 410 y Test Score (After) 370 366 365 413 440 420 419 Note that n = 7. We will define d1 = X1 - y1 After doing the appropriate calculations, we find that . d = -9 Sa = 14.12. Find the 80 % confidence interval for mean of the differences, ud

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