Answer:
2√3
Step-by-step explanation:
Our focus is going to be on Triangle CDB,
BC = 4
∠DBC = 60°
Using SOH CAH TOA, we have;
Sine 60° = opposite / Hypotenus
√3/2 = CD / 4
4 * √3/2 = CD
CD = 2 * √3
CD = 2√3
11 is the median of the entire data set
6 is the median of the lower half and 16 is the median of the upper half data scores...
Subtract 16 from 6 gives 10 so the answer is C) 10