Non-Asymptotically Valid and Asymptotically Exact (NAVAE) Confidence Intervals R package NAVAECI version 0.1.1 Implements the non-asymptotically valid and asymptotically exact confidence intervals in two cases: estimation of the mean, and estimation of (a linear combination of) the coefficients in a linear regression model, following (Derumigny, Girard and Guyonvarch, 2025) <doi:10.48550/arXiv.2507.16776>. Software Imports: BoundEdgeworth, expm Suggests: testthat (>= 3.0.0) Alexis Derumigny <a.f.f.derumigny@tudelft.nl> Comprehensive R Archive Network (CRAN) Alexis Derumigny [aut, cre] (ORCID: <https://orcid.org/0000-0002-6163-8097>), Lucas Girard [aut], Yannick Guyonvarch [aut] GPL-3 2026-01-21 application/tgz https://CRAN.R-project.org/package=NAVAECI doi:10.32614/CRAN.package.NAVAECI