Use a t-distribution to find a confidence interval
for the difference in means ud = u1 - u2 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 using the
paired data in the following table:
Case
1
2
3
4
5
Treatment 1
21
27
31
26
27
Treatment 2
17
29
26
21
20
Give the best estimate for ud, 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 = Enter your answer; best estimate
margin of error = Enter your answer; margin of
error
The 99% confidence interval is