Question

consider the following frequency distribution which gives the weight of 38 students of a class

Answer 1

first we have to add the frequencies of the given data from36-45i.e 14+5+3=12 and %the answer by the total observation i.e 12%38=6/19

Answer 2

HELLO DEAR!!!

Here's your answer...

The probability of students whose weight is between 36-45 kg

For getting the possible outcome, we have to add the number of students whose weight is between 36-40 and 41-45 kg

Number of students whose weight is in between 36-40 is 5

Number of students whose weight is in between 41-45 is 14

Add them,

14+5 = 19

Number of possible outcomes are 19

Total number of outcomes are 38

Probability = 19/38

Probability = 1/2

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The event with probability zero is 

Students who weigh more than 70kg

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HOPE THIS HELPS YOU....