The empirical rule for symmetrical bell-shaped data tells us that approximately:

1.68% of the values are within plus /minus 1 standard deviation from the mean

2.95% of the values are within plus /minus 2 standard deviation from the mean

3.99% of the values are within plus /minus 3 standard deviation from the mean

Suppose that a data set of 100 observations, with a symmetrical bell-shaped distribution, has a mean of 10.5 and avariance of 2.25.You are asked to find a value such that only 16% values will be below it.Pick the closest response from below.

Group of answer choices

12

13.5

-4 to 6

This question cannot be answered using the empirical rule

9