Answered

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In a survey, 250 adults and children were asked whether they know how to swim. The survey data are shown in the relative frequency table.

\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}

What percentage of the people surveyed cannot swim?

A. [tex]$6 \%$[/tex]

B. [tex]$12 \%$[/tex]

C. [tex]$18 \%$[/tex]

D. [tex]$40 \%$[/tex]

Sagot :

GinnyAnswer
To find the percentage of the people surveyed who cannot swim, we need to consider both the adults and children who cannot swim.

Let's look at the survey data:

- The proportion of adults who cannot swim is 0.06.
- The proportion of children who cannot swim is 0.12.

We need to sum these proportions to get the total proportion of people who cannot swim.

[tex]\[ 0.06 + 0.12 = 0.18 \][/tex]

Next, to convert this proportion into a percentage, we multiply by 100:

[tex]\[ 0.18 \times 100 = 18\% \][/tex]

Thus, the percentage of the people surveyed who cannot swim is [tex]\( 18\% \)[/tex].

The correct answer is [tex]\( \boxed{18\%} \)[/tex].
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