Question

brianna surveyed a representative sample of students at her school to collect data about the numbers of internet - compatible devices they own. estimate how many of the 250 students who attend briannas school own exactly two internet - compatible devices. use the data in the table.
internet - compatible devices

number of devices	number of students
2	25
3 or more	7

options:
about 50 students
about 100 students
about 125 students
about 150 students

Explanation:

Step1: Calculate total sample size

First, find the total number of students in the sample. Add the number of students for each device category: \(18 + 25 + 7 = 50\).

Step2: Find proportion of students with 2 devices

The proportion of students in the sample with exactly 2 devices is \(\frac{25}{50}\). Simplify this fraction: \(\frac{25}{50} = \frac{1}{2}\).

Step3: Estimate for 250 students

To estimate the number of students in the entire school (250 students) with exactly 2 devices, multiply the total number of students by the proportion: \(250\times\frac{1}{2} = 125\).

Answer:

About 125 students