- A51
- B20
- C3
- D9
Step-by-Step Solution
B's mean , so it exceeds A's 60 by 20. (9 is A's SD and 3 the gap between the SDs.)
Answer: B) 20
Sections A and B have the same coefficient of variation, 15%. Section A's mean is 60 and section B's SD is 12. By how much does B's mean exceed A's?
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