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Start the planIf the average (arithmetic mean) of a list of numbers is 12 and the standard deviation of that list of numbers is 1.3, then which of the following numbers is more than two standard deviations from the mean?
I. 14.7
II. 12.3
III. 9.3
A. I only
B. I and III only
C. II only
D. III only
E. I and III only
The OA is E
Source: Princeton Review
I. 14.7
II. 12.3
III. 9.3
A. I only
B. I and III only
C. II only
D. III only
E. I and III only
The OA is E
Source: Princeton Review
