Question

chloe threw a handful of identically shaped buttons into the air, then collected the 12 buttons that landed on the carpet. is this a random sample of the buttons? yes no

Explanation:

A random sample requires that every button has an equal chance of being selected. When Chloe threw the buttons, each button had an equal likelihood of landing on the carpet (assuming no bias in the throw or landing), so the 12 buttons collected are a random sample as each button in the original set had a chance to be part of this sample.

Answer:

yes