Which C=O functional group is present in the following molecule? 
Definitions:
Sample Standard Deviations
A measure of the dispersion or variability of data points in a sample from their mean.
Margin Of Error
An expression of the amount of random sampling error in a survey's results, indicating a range within which the true value lies with a specified confidence level.
Equal Sample Sizes
A condition in experimental design where all groups being compared have the same number of observations or participants.
Type I Error
The incorrect rejection of a true null hypothesis, also known as a "false positive" finding or conclusion.
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