Multiple Choice
The box-plot shown below was constructed from data regarding the annual salaries of both Opera singers and Country Western singers. 
Based on the graph shown above, what is the inter-quartile range of annual salaries for Opera signers?
A) $15000
B) $20000
C) $45000
D) $66000
E) None of the above.
Correct Answer:
Verified
Correct Answer:
Verified
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