I Chebyshev's Theorem States That About 68% of the Observation

Multiple Choice

i. Chebyshev's theorem states that about 68% of the observation will lie within one standard deviation of the mean;
Ii) About 95% of the observations will lie within two standard deviations of the mean;
Iii) Virtually all (99.7%) will lie within three standard deviations of the mean.

A) (i) , (ii) and (iii) are all correct statements
B) (i) and, (ii) are correct statements but not (iii) .
C) (i) and, (iii) are correct statements but not (ii) .
D) (ii) and (iii) are correct statements, but not (i) .
E) All statements are false