Question

A survey was conducted to see what people like to do in their free time. 100 people were interviewed. 20 people said they watch TV, 32 said that they read, 27 said they surf the internet and the rest said they do other stuff. Based on the data, what is the probability that a person chose at random

1. likes watching TV
2. likes reading
3. likes surfing the nws
4. prefers to do something other than these activities. [4 MARKS]

Answer 1

Concept :2 Marks
Application: 0.5 Marks each


Probability that a person likes watching TV = $\frac{20}{100}$ = 0.2
Probability that a person likes reading = $\frac{32}{100}$ = 0.32
Probability that a person likes surfing the internet = $\frac{27}{100}$ = 0.27
Number of people who like to do something else = 100 – (20 + 32 +0 27) = 21
Probability that a person likes something else = $\frac{21}{100}$ = 0.21