① Consider the frequency distribution table given below which gives the weights of 38 students of a class Weight (in kg) 31 – 35 36 – 40 41 – 45 46 – 50 51 – 55 56 – 60 61 – 65
Number of students 9 5 14 3 2 1 4
1. Find the probability that the weight of a student in the class lies in the interval (46 - 50) kg.
2. Find the probability that weight of a student is more than 50 kg.
Answers
Given : frequency distribution table given below which gives the weights of 38 students of a class
Weight (in kg) 31 – 35 36 – 40 41 – 45 46 – 50 51 – 55 56 – 60 61 – 65
Number of students 9 5 14 3 2 1 4
To find : the probability that the weight of a student in the class lies in the interval (46 - 50) kg.
2. probability that weight of a student is more than 50 kg.
Solution:
Weight (in kg) Number of students
31 – 35 9
36 – 40 5
41 – 45 14
46 – 50 3
51 – 55 2
56 – 60 1
61 – 65 4
Total 38
46 – 50 3
probability that the weight of a student in the class lies in the interval (46 - 50) kg. = 3/38
more than 50 kg.
51 – 55 2
56 – 60 1
61 – 65 4
probability that weight of a student is more than 50 kg. = (2 + 1 + 4)/38
= 7/38
Learn more:
In a Family of 3 children find probability of having at least one boy ...
https://brainly.in/question/7700718
If a coin is tossed one time then the probability of a head is 1/2. If we ...
https://brainly.in/question/13321902