Answer:
The mean is 8.6 minutes.
Step-by-step explanation:
"mean" is the average, the way people might talk about it in common language (not necessarily math class language.)
To calculate the mean, you ADD and DIVIDE. You add up all the numbers in your list and divide by however many numbers there are.
ADD:
5+5+15+12+14+6+3
= 60
Then DIVIDE by 7 (bc there are 7 items in the list)
60/7
= 8.5714285714
They said to round to the nearest tenth.
8.5714285714 rounds to 8.6
The mean is 8.6 minutes.