Statistical analysis and first-passage-time applications of a lognormal diffusion process with multi-sigmoidal logistic mean.

7 a–b: it can be noticed that the value of the RAE shows an increasing trend with respect to the parameter \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\sigma $$\end{document} σ ,

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