Subscribe to our Youtube Channel - https://you.tube/teachoo
Example 22 - Chapter 13 Class 12 Probability
Last updated at Feb. 15, 2020 by Teachoo
Transcript
Example 22 A person plays a game of tossing a coin thrice. For each head, he is given Rs 2 by the organizer of the game and for each tail, he has to give Rs 1.50 to the organizer. Let X denote the amount gained or lost by the person. Show that X is a random variable and exhibit it as a function on the sample space of the experiment.When three coin are tossed, Possible outcomes are Sample space = S = {HHH, HHT, HTH, THH, TTH, THT, HTT, TTT} Let X : amount gain or lost by person For each head, he wins Rs. 2 & for each tail he loses Rs. 1.5 We have calculate values of X & check that if all values are real values Hence value of X can be 6, 2.5, –1, –4.5 All these are real values Hence X = {6, 2.5, –1, –4.5} Thus, X is a real valued function whose domain is sample space Hence, X is a random variableA
Examples
Example 1
Example 2
Example 3
Example 4
Example 5 Important
Example 6
Example 7 Important
Example 8
Example 9 Important
Example 10
Example 11 Important
Example 12 Important
Example 13 Important
Example 14 Important
Example 15 Important
Example 16
Example 17 Important
Example 18 Important
Example 19 Important
Example 20 Important
Example 21 Important
Example 22 You are here
Example 23
Example 24 Important
Example 25 Important
Example 26 Important
Example 27 Deleted for CBSE Board 2021 Exams only
Example 28 Important Deleted for CBSE Board 2021 Exams only
Example 29 Important Deleted for CBSE Board 2021 Exams only
Example 30 Important Deleted for CBSE Board 2021 Exams only
Example 31 Important Deleted for CBSE Board 2021 Exams only
Example 32 Important Deleted for CBSE Board 2021 Exams only
Example 33 Important
Example 34 Important Deleted for CBSE Board 2021 Exams only
Example 35 Important
Example 36 Important
Example 37 Important
Chapter 13 Class 12 Probability
Serial order wise
About the Author
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.