Ask a Doubt
Request a call back

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

CBSE Class 9 Answered

Following table shows the marks obtained by 30 students in a class test: Marks Obtained 70 58 60 52 65 75 68 Number of Students 3 5 4 7 6 2 3 Find the probability that a student secures (a) 60 marks (b) less than 60 marks.
Asked by Topperlearning User | 11 Dec, 2013, 01:20: AM
answered-by-expert Expert Answer

Total no. of students = 30

(a) Probability of a student getting 60 marks =

(b) Number of students who got less than 60 marks = 5 + 7 = 12

Probability of a student getting less than 60 marks =

Answered by | 11 Dec, 2013, 03:20: 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
×