A dentist gives each patient a toothbrush after his or her visit. The toothbrushes come in 5 different
 colors, and they are chosen at random to give to the patients. The chart shows the number of each
 color toothbrush given to the last 50 patients to visit the dentist's office. Fill in the table with the
 probability of each event occurring.
 Toothbrush Color
 Number of patients
 who received it
 Observed Probability
 Red
 9
 a.
 Blue
 7
 b.
 Green
 15
 C.
 Yellow
 11
 d.
 Orange
 8
 e.