Question

Chebyshev’s inequality states that the probability of a “Six Sigma” event is less than ___________

(a) 10%

(b) 20%

(c) 30%

(d) 3%

I had been asked this question by my school principal while I was bunking the class.

The doubt is from Probability and Statistics in portion Statistical Inference and Regression Models of Data Science

Answer 1

Correct option is (d) 3%

The best explanation: If a bell curve is assumed, the probability of a “six sigma” event is on the order of one ten millionth of a percent.