Respuesta :
The experimental probability is
 (number of times it stopped over Sect. 2) / (total number of times you tried it)
Number of times it stopped in Section-2: 36
Total number of times you tried it:Â (20 + 36 + 24)Â =Â 80
Experimental probability of Section-2Â =Â 36/80 = 9/20Â =Â 45%