If the null hypothesis that two means are equal is true wher
If the null hypothesis that two means are equal is true, where will 86% of the computed z-values lie between?
If the null hypothesis that two means are equal is true, where will 86% of the computed z-values lie between?
Solution
If the number of elements in the set is large, about 68% of the elements have a z-score between -1 and 1; about 95% have a z-score between -2 and 2; and about 99% have a z-score between -3 and 3. Hence for 86% it will lie between -1 and 1.
