Imagine you\'re a researcher and you need to perform a one- sided test of an alt

Question

Imagine you're a researcher and you need to perform a one- sided test of an alternative hypothesis. You decide to conduct a significant test at the .05 level. The statistician in the next cubicle says you should use a 95% confidence interval for this hypothesis instead. Which of the following statements is true? o A. You should take the statistician's advice because a confidence interval is more accurate than a significance test. O B. The statistician should go back and check his statistics book, since confidence intervals are only used in two-sided tests. ° C. It doesn't matter which procedure you follow since they will both give the same results. 0 D. A one-sided significance test at the .05 level is equivalent to a 95% confidence interval. 0 E. None of the above.

Explanation / Answer

C) It doesn't matter which procedure you follow since they will both give the same resluts.

95% confidence level is nothing but a significance level of 0.05 or alpha of 5%.

95% confidence level indicates significance of 5% by (100% - 95%).

It does not matter whether it is one tailed or two tailed test.

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