Question

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

(a) What is the minimum number of measurements that lie inside [0,12]. Indicate the mumber and explain how it was obtained.

(b) If you know thit the shape of the distribution of the menstirements is bell-shmped and uymmetrical, then npproximately how many measurements are in the interval [3,9]. Indicate the mumber and expluin liow it was obtained.

 

Answer 1