[100(1-alpha)%, 100(P)%] tolerance intervals, which
are intervals with 100(1-alpha)% confidence of covering 100(P)% of the sampled population of interest.Krishnamoorthy, K. and Mathew, T. (2009), Statistical Tolerance Regions: Theory, Applications, and Computation, Wiley.
Patel, J. K. (1986), Tolerance Intervals - A Review, Communications in Statistics - Theory and Methodology,
15, 2719--2762.
Young, D. S. (2010), tolerance: An R Package for Estimating Tolerance Intervals, Journal of Statistical Software, 36(5), 1--39.
Young, D. S. (2014), Computing Tolerance Intervals and Regions in R. In M. B. Rao and C. R. Rao (eds.), Handbook of Statistics, Volume 32: Computational Statistics with R, 309--338. North-Holland, Amsterdam.
confint