The following frequency distribution table gives the weights of 38 students of a class
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Total number of students = 38
(i) Number of students whose weight is at most 60 kg = 9 + 5 + 14 + 3 + 1 + 2 = 34
Probability that weight of student is at most 60 kg
(ii) No. of students whose weight is at least 36 kg
= 5 + 14 + 3 + 1 + 2 + 2 + 1 + 1 = 29
Probability that the weight of a student is at least 36 kg =
(iii) No. of students whose weight is not more than 50 kg
= 9 + 5 + 14 + 3 = 31
Probability that the weight of a student is not more than 50 kg = 31/38
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