4 please

Question 4 (1 point) A data set with 15 observations appear as bel , where ? represents a missing value: 10, 12, 15, 10, 24, 22, 27, 30, 28, 30, 16, 7, ?, ?, ? What is the median of the full data set (including missing values)? (Please choose the best answer!) O a) Impossible to determine with the given information. O b) 29 O c) 19 O'd) 7.25 O e) 15.5