To find the relative frequency of people who prefer hiking and also prefer mountains, you need to use the formula for relative frequency:
\[ \text{Relative Frequency} = \frac{\text{Number of people who prefer hiking and mountains}}{\text{Total number of people who prefer hiking}} \]
From the table:
- Number of people who prefer hiking and mountains = 45
- Number of people who prefer hiking:
- Mountains: 45
- Seaside: 20
- Island: 12
Calculating the total number of people who prefer hiking:
\[ \text{Total number of people who prefer hiking} = 45 + 20 + 12 = 77 \]
Now, substituting these values into the relative frequency formula:
\[ \text{Relative Frequency} = \frac{45}{77} \]
Now, to convert this to a percentage:
\[ \text{Relative Frequency as a percentage} = \left(\frac{45}{77}\right) \times 100 \approx 58.441% \]
Rounding to the nearest tenth:
\[ \approx 58.4% \]
So, the relative frequency that the people who prefer hiking also prefer mountains is 58.4%.