Ex 15.1, 13 - Chapter 15 Class 9 Probability (Term 2)

Transcript

Ex 15.1, 13 In Q.1, Exercise 14.2, you were asked to prepare a frequency distribution table regarding the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB. Total number of students = 30 Number of students with Blood group AB = 2 Probability = (𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑠𝑡𝑢𝑑𝑒𝑛𝑡𝑠 𝑤𝑖𝑡ℎ 𝑏𝑙𝑜𝑜𝑑 𝑔𝑟𝑜𝑢𝑝 𝐴𝐵)/(𝑇𝑜𝑡𝑎𝑙 𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑠𝑡𝑢𝑑𝑒𝑛𝑡𝑠) = 3/30 = 1/10