Question

A teacher would like to estimate the percentage of her students who play chess.

Which method should the teacher use to select the sample?


A. select all students who are currently in the chess club

B. use a computer to randomly select 30 student IDs from all her students

C. use a computer to randomly select 30 student IDs from all students

D. select every other student in her classes until she has selected a total of 30 students

Answer 1

A. select all students who are currently in the chess club

Explanation:

If the teacher randomly selects students, there is a greater chance that many don't play chess. But, if the teacher selects all the students who are currently in the chess club, most likely all of them play chess because they are in the chess club.

Answer 2

D

Explanation:

because it's normal reasonal if it is wrong i will look for a better answer