Suppose that a data set of 100 observations has a mean of 1 and a variance of 6.25. According to the empirical rule, about 95% of the observations should fall within two standard deviations from the mean; this means that for our data, about 95% of the values should fall between which two values?

-11.25 to 12.5

Not enough information

-4 to 6

-5.25 to 7.25

-1.5 to 3.5