[ ] In the first paragraph, we need to specify what kind of article we are submitting ("research article" in this case?)
[ ] The second paragraph should focus on the motivation. It might be better that the paragraph starts with "As neuroscientists, ..." to make it clear that people care about estimating the mean given multiple graphs.
[ ] The third paragraph should focus on the implications, e.g. especially for a small number of samples.
Here are the suggestions Jovo gave: