Question

The heights of 60 students of a class are given in the following table : 

Height(in cm)	150-155	155-158	158-160	160-165	165-172
No. of students	8	20	25	4	3

Find the probability that the height of a student lies in the interval 

(ii) 150-160

Answer 1

The total number of students = 60 

Total number of students whose height lie in the interval 
150-160=8+20+25=53 

P(Height of a student lies in the interval 150-160) 

= `"Number ot students whose height lies in the interval 150 -160 "/"Total number students"` = `53/60`