Question

Ivy randomly surveys students in her school to learn about mobile phone password use. Of 25 respondents, 14 use a password. Based on Ivy’s data, how many of the 275 students in her school would be expected to use a password?

Answer 1

154

Explanation:

Given : Of 25 respondents, 14 use a password.

To Find: Based on Ivy’s data, how many of the 275 students in her school would be expected to use a password?

Solution:

Let x be the no. of respondents out of 275 who use password

So, A.T.Q

`(14)/(25) =(x)/(275)`

`(14)/(25) * 275 =x`

`154 =x`

Hence 154 of the 275 students in her school would be expected to use a password