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Out of a population of 700 students, 120 were asked by a random sampling to choose the green vegetable they would have served in the cafeteria. Their responses are shown in the table below.

\begin{tabular}{|c|c|}
\hline \multicolumn{2}{|c|}{ Cafeteria Choices } \\
\hline Green Vegetable & \begin{tabular}{c}
Number of \\
Students
\end{tabular} \\
\hline peas & 34 \\
\hline green beans & 27 \\
\hline broccoli & 23 \\
\hline zucchini & 18 \\
\hline brussels sprouts & 18 \\
\hline
\end{tabular}

Using proportional reasoning, about how many students out of the 700 would you expect to request broccoli?

A. 23 students
B. 30 students
C. 105 students
D. 134 students

Sagot :

Alright, let's break down the question and solve it step-by-step.

1. Understand the Problem:
- We have a population of 700 students.
- A sample of 120 students has been taken from this population.
- Out of these 120 students, 23 students chose broccoli as their preferred green vegetable.

2. Determine the Proportion:
- First, we need to find out the proportion (or fraction) of students in the sample who prefer broccoli.
- This proportion is calculated as the number of students who chose broccoli divided by the total number of students in the sample:

[tex]\[ \text{Proportion of broccoli-preferring students} = \frac{23}{120} \][/tex]

- This proportion can be approximated as 0.19166666666666668.

3. Scale Up to Population:
- We need to apply this proportion to the entire population to estimate how many students among all 700 would prefer broccoli.
- This is done by multiplying the proportion by the total population:

[tex]\[ \text{Expected number of broccoli-preferring students} = 0.19166666666666668 \times 700 \][/tex]

- Calculating this, we get approximately [tex]\( 134.16666666666669 \)[/tex].

4. Final Answer:
- Since the problem asks for the expected number of students in a whole number, it's customary to either round to the nearest whole number or directly use the given decimal value in reporting.
- Thus, we would expect about 134 students out of the 700 to request broccoli.

So, the correct option is:
- 134 students