Question

surveyed a random sample of studeeyed a random sample of students at her school ton below:- 8 students walk or ride a bike · 12 studentse bus Based on the results of the survey, ...o

Answer 1

400 out of the 900 students do not take the bus to school

Here, we want to know the number of students in the 7th grade that do not take a bus to school

Firstly, we need the fraction of the survey for students who do not take a bus

The total surveyed is 8+ 12 + 25 = 45

Out of this, (8+12 = 20) do not take the bus

The farction of the survey that do not take a bus is 20/45

So, out of the 900, the number that do not take a bus will be;

20/45 * 900 = 20 * 20 = 400 students