Block, Henry W.; Li, Yulin; Savits, Thomas H. - In: Statistics & Probability Letters 74 (2005) 3, pp. 253-264
The normal density is unimodal in a strong sense as are the densities of mixtures of normals whose means are not too far apart. Consequently, by a standard result in reliability, these mixture densities have an increasing failure rate. This paper investigates how the modality of mixtures of...
