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Use Mean, Total, and Count Relationships
Grade Level
GRE
QR.066 Use Mean, Total, and Count Relationships
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Skill Level
🔴 Hard
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A data analyst has 24 entries with mean 11.5. Another set of entries with mean 17.5 is combined with them, and the combined mean is 14.5. How many entries are in the second set?
A
24
B
18
C
20
D
30
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