Answer:
B. 12.5
Step-by-step explanation:
We have the lowe confidence interval = 185
The upper confidence interval = 210
Mean of X = (lower confidence + upper confidence interval)/2
Mean of X = 185 + 210/2
= 197.5
The margin of error = the upper confidence interval - mean of X
= 210-197.5
= 12.5
20*15=300
It's "too short", but there's not much else to say here.
Each term differs by -68 and the first term is -68, we have:

As an expession it's just -68n.
Answer:
3.34166666666666
Step-by-step explanation: