In a survey of 200 ladies it was found that 142 like coffee while 58 dislike it Find the probability...

Question

In a survey of 200 ladies it was found that 142 like coffee while 58 dislike it Find the probability that a lady chosen at random i likes coffee ii dislikes coffee

Accepted Answer

It is given that Number of ladies 200 Number of ladies who like coffee 142 Number of ladies who dislike coffee 58 Consider E1 as the event that the selected ladies like coffee So we get P E1 number of ladies who like coffee number of trials By substituting the values P E1 142 200 We get P E1 071 Consider E1 as the event that the selected ladies dislike coffee So we get P E2 number of ladies who dislike coffee number of trials By substituting the values P E2 58 200 We get P E2 029

RS Aggarwal Solutions Class 9 Mathematics Solutions for Probability Exercise 19 in Chapter 19 - Probability