#' Example Data: Mixture Model Summaries
#'
#' Simulated dataset for testing the \code{est_mixture()} function.
#' Each row corresponds to one study providing summary-level data
#' from a two-component normal mixture.
#'
#' @format A data frame with 4 columns:
#' \describe{
#'   \item{ni}{Sample size for each study.}
#'   \item{mi}{Count of group 1 individuals in each study.}
#'   \item{xbar}{Sample mean of the outcome variable.}
#'   \item{s2}{Sample variance of the outcome variable.}
#' }
#' @usage data(mixture_example)
#' @keywords datasets
"mixture_example"
