25
You visited us
25
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard IX
Mathematics
Theoretical Probability
The probabili...
Question
The probability of age of the workers to be under 40 years is:
A
0.125
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
0.325
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
0.525
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
0.725
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is
B
0.325
Total no. of workers
=
38
+
27
+
86
+
48
+
3
=
202
Number of worker's age
<
40
=
202
−
137
=
65
P
(
E
)
=
65
202
=
0.322
Suggest Corrections
0
Similar questions
Q.
The probability of workers having age from 30 to 39 years is:
Q.
Question 20
A recent survey found that ages of workers in a factory as follows:
A
g
e
(
i
n
y
e
a
r
s
)
20
−
29
30
−
39
40
−
49
50
−
59
60
a
n
d
a
b
o
v
e
N
u
m
b
e
r
o
f
38
27
86
46
3
w
o
r
k
e
r
s
If a person is selected at random, find the probability that the person is:
(i)
40 years or more.
(ii)
Under 40 years.
(iii) Having age from 30 - 39 years.
(iv)
Under 60 but over 39 years.
Q.
Average age of 50 employees working in a departmental store is 30 years. In the next year, ten workers will retire. What will be the average age in the next year?(1) Retirement age is sixty years.
(2)
There are 100 workers in the department
Q.
The following table shows the age of workers in a factory. Find out the average age of workers.
Age (in Years)
20−29
30−39
40−49
50−59
60−69
Workers
10
8
6
4
2
Q.
Find the mode of the ages of 181 workers of a factory from the following frequency distribution:
Age (in years)
20-30
30-40
40-50
50-60
60-70
Number of workers
25
47
62
37
10
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
Theoretical Probability
MATHEMATICS
Watch in App
Explore more
Theoretical Probability
Standard IX Mathematics
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Solve
Textbooks
Question Papers
Install app