A Large Group of Inductees Was Given a Mechanical Aptitude

Multiple Choice

A large group of inductees was given a mechanical aptitude and a finger dexterity test. The arithmetic mean score on the mechanical aptitude test was 200, with a standard deviation of 10. The mean and standard deviation for the finger dexterity test were 30 and 6 respectively. What is the relative dispersion in the two groups?

A) Mechanical 5 percent, finger 20 percent
B) Mechanical 20 percent, finger 10 percent
C) Mechanical 500 percent, finger 200 percent
D) Mechanical 50 percent, finger 200 percent
E) None of the choices are correct.