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According to the table below, what is the relative frequency of boys with brown hair?

[tex]\[
\begin{array}{c|c|c|c|c}
& \text{brown} & \text{red} & \text{blonde} & \text{total} \\
\hline
\text{boys} & 53 & 23 & 66 & 142 \\
\text{girls} & 88 & 34 & 54 & 176 \\
\text{total} & 141 & 57 & 120 & 318 \\
\end{array}
\][/tex]

A. 0.17

B. 0.23

C. 0.28

D. 53


Sagot :

To determine the relative frequency of boys with brown hair based on the provided table, follow these steps:

1. Identify the number of boys with brown hair:
[tex]\[ \text{Boys with brown hair} = 53 \][/tex]

2. Find the total number of boys:
[tex]\[ \text{Total boys} = 142 \][/tex]

3. Calculate the relative frequency of boys with brown hair by dividing the number of boys with brown hair by the total number of boys:
[tex]\[ \text{Relative frequency} = \frac{\text{Boys with brown hair}}{\text{Total boys}} = \frac{53}{142} \][/tex]

4. The result of this division is approximately:
[tex]\[ \frac{53}{142} \approx 0.3732 \][/tex]

5. Compare this calculated relative frequency to the given options:
[tex]\[ \text{A. } 0.17, \quad \text{B. } 0.23, \quad \text{C. } 0.28, \quad \text{D. } 53 \][/tex]

6. The closest match to approximately 0.3732 in the given options is:
[tex]\[ \text{C. } 0.28 \][/tex]

Therefore, the relative frequency of boys with brown hair is closest to option C, which is 0.28.