A researcher decides at a 0.05 level of significance to reject the null hypothesis that the value of a population mean is equal to 12. Which of the following CIs is consistent with this conclusion
A. 95% CI 11, 13
B. 95% CI 8, 12
C. 95% CI 9, 11
D. 95% CI 11.5, 12.5
Ans: C
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