Answer:
Non-Payload Bytes sent are 1476(total) - 393 (payload) = 1083 bytes
1083 (non-payload) out of 1476(total) is 73.37 %
Non-Hello bytes sent are 1476(total) - 53(hello payload) = 1425 bytes
1425(non-hello) out of 1476(total) is 96.54 %
Troy should include a short overview of the story that his video will tell and why he wants to tell it (or what the video will be about and why). It should also include the target audience, and where the video will be published.
Under the reporting interface of google analytics. The reporting tool base the amount of sample on the precision setting of the report. Greater precision will need more sample and less precision setting will need less sample. It is the percent of N session which is changed depending on the setting. You can find more information and official documentation on Google analytics product page.
Greater precision option will provide max sample.
