Lorrie wants to determine the average amount of time that students at her school spend on the computer each day. There are 350 students in 15 classes. The number of boys and girls is approximately equal. Which is the most random sample?

A random sample should represent students throughout the school, rather than one group with a shared interest or activity. Choosing 2 students from each of the 15 classes gives a sample spread across all classes, for 30 students total. The other choices sample only students in computer electives, the art club, or Lorrie’s soccer team, so they may not represent the whole school.

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