No, it is not a valid inference because her classmates do not make up a random sample of the students in the school.
Answer:
$7.95-$2.25=x
Step-by-step explanation:
pls brainliest
Answer:
I did this
Step-by-step explanation:
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
