Answer:
The relative frequency of people whose hobby is reading and is not riding a motorcycle is 0.42 (approx)
Step-by-step explanation:
Relative frequency is the fraction of number of favorable outcome by total possible outcomes that is
[tex]\text{ Relative frequency}=\dfrac{\text{number of favorable outcome}}{\text{total possible outcomes}}[/tex]
Since, we have to find the relative frequency of people whose hobby is reading and is not riding a motorcycle.
From the given data,
Number of people whose hobby is reading are ( 7 +5) = 12
Number of people whose hobby is reading and is not riding a motorcycle is 5.
[tex]\text{ Relative frequency}=\dfrac{\text{Number of people whose hobby is reading and is not riding a motorcycle}}{\text{Number of people whose hobby is reading}}[/tex]
[tex]\text{ Relative frequency}=\dfrac{5}{12}=0.41666..[/tex]
[tex]\text{ Relative frequency}=0.42[/tex](approx)
Thus, the required relative frequency of people whose hobby is reading and is not riding a motorcycle is 0.42 (approx)