Answer: Option 'A' is correct.
Step-by-step explanation:
Since we have given that
Number of people who read paper and under 40 = 4
Number of people who are under 40 = 40
We need to find the probability that a person surveyed gets the news by reading the paper given that he or she is under 40.
We will use "Conditional probability":
P( person read the paper given that he or she is under 40 ) is given by
[tex]\dfrac{\text{P(read the paper and are under 40}}{\text{P(person who are under 40)}}\\\\=\dfrac{4}{40}\\\\=\dfrac{1}{10}\times 10\\\\=10\%[/tex]
Hence, Option 'A' is correct.
