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Answer :
To determine what percentage of the people surveyed are adults, we need to analyze the relative frequency table provided.
Here's the table again for reference:
```
\begin{tabular}{|c|c|c|c|}
\hline & Can swim & Cannot swim & Total \\
\hline Adults & 0.34 & 0.06 & \\
\hline Children & 0.48 & 0.12 & \\
\hline Total & & & \\
\hline
\end{tabular}
```
1. Calculate the total proportion of adults:
We need to add the relative frequencies of adults who can swim and adults who cannot swim.
[tex]\[
\text{Total adults} = 0.34 + 0.06 = 0.40
\][/tex]
2. Convert the proportion to a percentage:
Since the total proportion of adults is 0.40, we convert this to a percentage by multiplying by 100.
[tex]\[
\text{Percentage of adults} = 0.40 \times 100 = 40\%
\][/tex]
Therefore, 40% of the people surveyed are adults.
So, the correct answer is:
B. [tex]\(40\%\)[/tex]
Here's the table again for reference:
```
\begin{tabular}{|c|c|c|c|}
\hline & Can swim & Cannot swim & Total \\
\hline Adults & 0.34 & 0.06 & \\
\hline Children & 0.48 & 0.12 & \\
\hline Total & & & \\
\hline
\end{tabular}
```
1. Calculate the total proportion of adults:
We need to add the relative frequencies of adults who can swim and adults who cannot swim.
[tex]\[
\text{Total adults} = 0.34 + 0.06 = 0.40
\][/tex]
2. Convert the proportion to a percentage:
Since the total proportion of adults is 0.40, we convert this to a percentage by multiplying by 100.
[tex]\[
\text{Percentage of adults} = 0.40 \times 100 = 40\%
\][/tex]
Therefore, 40% of the people surveyed are adults.
So, the correct answer is:
B. [tex]\(40\%\)[/tex]
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