Research: quantifying GitHub Copilot’s impact on developer productivity …

Specifically, the developers using GitHub Copilot took on average 1 hour and 11 minutes to complete the task, while the developers who didn’t use GitHub Copilot took on average 2 hours and 41 minutes. These results are statistically significant (P=.0017) and the 95% confidence interval for the percentage speed gain is [21%, 89%].

https://github.blog/2022-09-07-research-quantifying-github-copilots-impact-on-developer-productivity-and-happiness/