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प्रश्न
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
उत्तर
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`
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