Eight pairs yield x-bar_d = 6.2, s_d = 3.8. Use t* = 2.365 for 95% CI with df = 7.
What is the 95% CI for mu_d?
- Acheck_circle
(3.02, 9.38)
- B
(2.85, 9.55)
- C
(5.62, 6.78)
- D
(0.00, 12.40)
Explanation
ME = 2.365 * 3.8/sqrt(8) = 2.365 * 1.343 = 3.18. CI = 6.2 ± 3.18 = (3.02, 9.38).