A researcher reports a 95% CI 2.30, 2.50. If the null hypothesis was that the mean in the population equals 2.00, then what would the decision have been for a significance test at a 0.05 level of significance?
A. retain the null because 2.00 is not contained in the confidence interval
B. reject the null because 2.00 is not contained in the confidence interval
C. retain the null because 2.00 is contained in the confidence interval
D. reject the null because 2.00 is contained in the confidence interval
Ans: B
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