Example 15 - Chapter 13 Class 12 Probability
Last updated at Feb. 15, 2020 by Teachoo
Transcript
Example 15 A person has undertaken a construction job. The probabilities are 0.65 that there will be strike, 0.80 that the construction job will be completed on time if there is no strike, & 0.32 that the construction job will be completed on time if there is a strike. Determine the probability that the construction job will be completed on time Now, Probability that the construction job is completed on time = Probability that there will be a strike × Probability that the job is completed on time + Probability that there will not be a strike × Probability that the job is completed on time Now, Probability that there will not be a strike = 1 – Probability of strike = 1 – 0.65 = 0.35 Therefore, Probability that the construction job is completed on time = Probability that there will be a strike × Probability that the job is completed on time + Probability that there will not be a strike × Probability that the job is completed on time = 0.65 × 0.32 + 0.35 × 0.80 = 0.208 + 0.28 = 0.488 Thus, required probability is 0.488
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 You are here
Example 16
Example 17 Important
Example 18 Important
Example 19 Important
Example 20 Important
Example 21 Important
Example 22
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.