**Answer:**

Approximately 68% of people have IQs between 84 and 116.

**Step-by-step explanation:**

**The Empirical Rule states that, for a normally distributed random variable:
**

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

**In this problem, we have that:
**

Mean of 100, standard deviation of 16.

**Percentage of people with IQs between 84 and 116.**

84 = 100 - 16

116 = 100 + 16

So within 1 standard deviation of the mean, which, by the Empirical Rule, is approximately 68%.