A person is standing on a staircase. He walks clown 4 steps, up 3 steps, down 6 steps, up 2 steps, up 9 steps, and down 2 steps. Where is he standing in relation to the step on which he started
A. 2 steps above
B. 1 step above
C. the same place
D. 1 step below
E. (E) 2 steps below
The arithmetic mean of a data set is 46 and the standard deviation of the set is 4. Which value is exactly 1.5 standard deviations from the arithmetic mean of the set
A. 42
B. 44.5
C. 47.5
D. 50
E. (E) 52