Check sibling questions

Question 10 - Probability Distribution - Chapter 13 Class 12 Probability

Last updated at May 29, 2023 by

Ex 13.4, 10 - Find mean number of heads in three tosses of a fair coin

Ex 13.4, 10 - Chapter 13 Class 12 Probability - Part 2

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class

Book a free demo

Transcript

Question 10 Find the mean number of heads in three tosses of a fair coin.Question 10 Find the mean number of heads in three tosses of a fair coin.So the Probability distribution The mean number is given by 𝜇=𝐸(𝑥)=∑2_(𝑖 = 1)^𝑛▒𝑥𝑖𝑝𝑖 = 0 × 1/8+"1 ×" 3/8+ 2 × 3/8+ 3 × 1/8 = 0 + 3/8+ 6/8+3/8 = 12/8 = 3/2 = 1.5

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.