Question

Use a t-distribution to find a confidence interval for the difference in means ud au 1-2 using the relevant sample results from paired data. Assume the results come from random samples from populations that are approximately normally distributed, and that differences are computed using d = x1-x2. A 99% confidence interval for pd using the paired data in the following table: Case 1 2 3 4 5 Treatment 1 23 28 31 24 28 Treatment 2 18 30 24 20 21 Give the best estimate forud, the margin of error, and the confidence interval. Enter the exact answer for the best estimate, and round your answers for the margin of error and the confidence interval to two decimal places. best estimate = i margin of error = The 99% confidence interval is to

Answer 1

Treatment Treatment d (223? 1 (1-2) 23 18 5 22 0.64 25 30 -2 38-44 3) 24 al 7.84 २५ 20 to y 0.04 28 21 2 784 $ 6542 sd 21 a= 2 = 42 standard deviation į (ard)? 께 54.8 5-) a) 6. Margin of error .Scd 3.70135 best estimate uda đ.4.2 Ei talende x Solo 994..2 di 0.0); df: -1. 51 - 4 tale af: 4.6022

3:20135 €: 4.60 22 X S E: 7-61799 ~ 17.62 min The 9a% confidence ince interval alde to dite) (4.2-7:6 1999 to 4.27761799) to 11-82) tikintis (-3:42