Question

"What is the approximate area of the shaded region under the following standard normal curve?

A. 0.16
B. 0.34
C. 0.68
D. 0.95
E. 0.997"

Answer 1

For the standard normal distribution, the shaded region is between:
(The mean ( Mi ) - 2 standard deviations( Sigma )) and (the mean (Mi)+ 2 standard deviations( Sigma)).
It is : 34 % · 2 + 13.6 % · 2 = 95.2 % ≈ 0.95
Answer: D ) 0.95