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?

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old