  Let $X=\sum_{k=1}^\infty X_k \beta^{-k}$ be the base-$\beta$ expansion of a
continuous random variable $X$ on the unit interval where $\beta$ is the
positive solution to $\beta^n = 1 + \beta + \cdots + \beta^{n-1}$ for an
integer $n\ge 2$ (i.e., $\beta$ is a generalization of the golden mean for
which $n=2$). We study the asymptotic distribution and convergence rate of the
scaled remainder $\sum_{k=1}^\infty X_{m+k} \beta^{-k}$ when $m$ tends to
infinity.
