what percent of people within 3 standard deviations of the mean?
what percent of people within 3 standard deviations of the mean?
Answer
Explanation:
Step1: Identify relevant areas
In a normal - distribution curve, we need to sum the areas within $\mu - 3\sigma$ and $\mu+3\sigma$.
Step2: Sum the percentages
$(0.15 + 2.35+13.5 + 34+34 + 13.5+2.35 + 0.15)%=99.7%$
Answer:
99.7