We have n = 1000 measurements whose mean and variance respectively, are x = 6 and S 2 = 9. What is the minimum number of measurements that lie inside...

We have n = 1000 measurements whose mean and variance respectively, are x = 6 and S2= 9.

What is the minimum number of measurements that lie inside [0, 12]. Indicate the number and explain how it was obtained. How do I get the answer?

Not very sure where to start