Is a standard deviation of 10 a large number indicating great variability,or is it small number indicating little variability? To answer this question correctly,one should look carefully at the value of the:

A) mean.
B) standard deviation.
C) coefficient of variation.
D) mean dividing by the standard deviation.

You calculate a value of 1.17 for the t-statistic and find falls in the region of non-rejection. As a result, the most appropriate conclusion is that you ______.

A) do not reject the alternative hypothesis
B) reject the null hypothesis
C) reject the alternative hypothesis
D) do not reject the null hypothesis