A Company's Human Resource Department Was Interested in the Average

Multiple Choice

A company's human resource department was interested in the average number of years that a person works before retiring. The sample of size 11 follows: (i) Based on the values of the arithmetic mean, median, and mode, the distribution is most likely symmetrical.
(ii. The arithmetic mean is 20.4.
(iii) The median is 21.

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) (i) , (ii) and (iii) are all false statements.