Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

The age (in years) of workers are as follows: Age (in yrs) 10 - 19 20 - 29 30 - 39 40 - 49 50 - 59 60 and above No. of workers 5 40 26 15 8 6 If a worker is selected at random, find the probability that the person is: (a) 30 years or more (b) below 50 years
Asked by Topperlearning User | 11 Dec, 2013, 03:34: AM
answered-by-expert Expert Answer

Total no. of workers = 100

(a) Number of workers who are 30 years or more = 26 + 15 + 8 + 6 = 55

P(30 yrs or more) =

(b) Number of workers who are below 50 years = 5 + 40 + 26 + 15 = 86

P(below 50 yrs) =

Answered by | 11 Dec, 2013, 05:34: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 9 - Maths
if the events happen then probability of
Asked by ckkc47960 | 19 Mar, 2022, 04:41: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
A no. is chosen at random, find the probability that the digit at the unit’s place is: 1. 9 2. a non- zero multiple of 3 3. a non- zero even no. 4. an odd no.
Asked by jovanjotsingh950 | 07 Jan, 2022, 08:33: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 11 Dec, 2013, 01:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
A survey at a university was conducted among 880 students. Of these, 500 identified themselves as "smokers". Compute the empirical probability that a randomly selected student is not from a "smoker".
Asked by Topperlearning User | 11 Dec, 2013, 01:10: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
In making a math project, a teacher found out that 26 people took two to three hours, 14 people took three to four hours and 10 people took more than four hours to complete a particular assignment. What is the experimental probability that the assignment can be done in less than four hours?
Asked by Topperlearning User | 12 Dec, 2013, 09:37: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
12 packets of salt, each marked 2 kg, actually contained the following weights (in kg) of salt: 1.95, 2.02, 2.06, 1.98, 2.03, 1.97, 2.04, 1.99, 1.985, 2.025, 2.00, 1.98 Out of these packets one packet is drawn at random. What is the probability that the chosen packet contains more than 2 kg of salt?
Asked by Topperlearning User | 11 Dec, 2013, 01:12: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
In the past 50 cricket matches between two teams A and B, team A had won 29 matches. What is the experimental probability that in the next cricket match between the two teams, team A will lose?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 11 Dec, 2013, 02:10: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×