an alpha level of =.05 means what: a. that more than 5% of the values are significantly different from the rest of the data b. that 5% of the data are not significantly different than the rest of the data c. that the values of the data must fall within the 5% critical range of the curve in order to be significant d. that the values of the data must fall out of the 5% critical range of the curve in order to be significant