Question

The results for a survey of 120 students who were selected randomly are as follows: 60 students have a cell phone plan with Verizon, 36 students have a cell phone with T-Mobile, and 24 students do not have a cell phone. The total number of students in the school was 380. Based on the data, what is the BEST approximation for the total number of students who have a cell phone plan with T-Mobile? *

Answer 1

The BEST approximation for the total number of students who have a cell phone plan with T-Mobile is 114.

Explanation:

To find the BEST approximation for the total number of students who have a cell phone plan with T-Mobile, we first find the proportion of the sample, then apply to the entire population.

Sample

Of 120 students, 36 have a cell phone with T-mobile.

The sample proportion is:

`p = 36/120 = 0.3`

There are 380 students

0.3*380 = 114

The BEST approximation for the total number of students who have a cell phone plan with T-Mobile is 114.