If the 99% confidence interval for the mean of a population from a data yielded

Question

If the 99% confidence interval for the mean of a population from a data yielded the interval (2.50 3.50) Then the same data used to test H_0: mu = 4 H_a: mu not equal to 4 would lead to (a) Acceptance of the null hypotheses at both 5% level and 1% level of significance (b) Acceptance of the null hypotheses at 5% level of significance but not enough information to say about 1% level of significance (c) rejection of the null hypotheses at both 5% level and 1% level of significance (d) ejection of the null hypotheses at 5% level of significance but not enough information to say about 1% level of significance

Explanation / Answer

Ans: Option C. (since mu=4 lies outside the confidence interval )   

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