See attached picture for the answers:
Answer:




Step-by-step explanation:
We have that:

When we substitute n=1, we get:

When we substitute n=2 we get:

When we substitute n=3, we get:

When we substitute n=n+1, we get:

Now

We expand and simplify to obtain:


Answer:The mean would be equal to 12.57
The difference would be 10
The other would be 12
Step-by-step explanation:
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