A 95% CI for p is (0.45, 0.55). Test H₀: p = 0.50 vs Hₐ: p ≠ 0.50.
Using α = 0.05, what is the conclusion?
- A
Reject H₀ since 0.50 is in the CI.
- Bcheck_circle
Fail to reject H₀ since 0.50 is in the CI.
- C
Cannot tell without the test statistic.
- D
Reject H₀ since the CI doesn't include 0.
Explanation
Since 0.50 lies in the 95% CI, the value is plausible; fail to reject H₀ at α = 0.05.