If the 12 a central confidence interval on m does not


1. If the 12 a central confidence interval on m does not contain the value of µ in the null hypothesis, then a two-tailed test would lead to rejection of the null hypothesis at the a level of significance.

2. If the variance of a normal distribution is unknown and is estimated by s2, then two separate random samples of the same size could produce two confidence intervals of different widths.

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Basic Statistics: If the 12 a central confidence interval on m does not
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