एक यादृच्छिक चर X का प्रायिकता घनत्व फलन f(x) = \(\frac{\pi}{10} sin \frac{\pi x}{5}\); 0 ≤ x ≤ 5 है। X का पहला चतुर्थक है:

This question was previously asked in
SSC CGL JSO Tier-II, 2018 (Statistics) Official Paper-III (Held On: 14 Sept, 2019)
View all SSC CGL Papers >
  1. \(\frac{10}{3}\)
  2. 1.25
  3. \(\frac{1}{5}\)
  4. \(\frac{5}{2}\)

Answer (Detailed Solution Below)

Option 2 : 1.25
super-pass-live
Free
SSC CGL Tier 1 2025 Full Test - 01
3.3 Lakh Users
100 Questions 200 Marks 60 Mins

Detailed Solution

Download Solution PDF

Calculation:

∫f(x)dx

∫π/10 (sinπx/5)   dx

let \(\frac{π x}{5}=t\)

For x = 0, t = 0

For x = 5, t = π

\(\frac{π dx}{5}=dt\)

\(\frac{π dx}{5}=dt\)

\(dx=\frac{5dt}{π}\)

The limits of the above integration will be from 0 to π

\(\frac{-1}{2}(cost)|_0^\pi\)

\(-\frac{1}{2}(cos\pi - cos0)\)

= 1

Latest SSC CGL Updates

Last updated on Jul 8, 2025

-> The SSC CGL Notification 2025 for the Combined Graduate Level Examination has been officially released on the SSC's new portal – www.ssc.gov.in.

-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.

-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025.

->  Aspirants should visit ssc.gov.in 2025 regularly for updates and ensure timely submission of the CGL exam form.

-> Candidates can refer to the CGL syllabus for a better understanding of the exam structure and pattern.

-> The CGL Eligibility is a bachelor’s degree in any discipline.

-> Candidates selected through the SSC CGL exam will receive an attractive salary. Learn more about the SSC CGL Salary Structure.

-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.

-> The CSIR NET Exam Schedule 2025 has been released on its official website.

More Random Variables Basics Questions

More Probability and Statistics Questions

Get Free Access Now
Hot Links: teen patti bodhi teen patti club apk teen patti octro 3 patti rummy