MATHEMATICAL MODEL OF RANDOM SELECTION TECHNICAL DEVICE
The service life of a particular technical system is characterized by the indicator distribution parameter. Several types of technical systems are considered. The buyer analyzes the technical data of the product set, contract terms, and delivery options …. The set of probabilities with which the buyer chooses a technical system of the type is determined. The warranty period for a technical system is determined by the indicator distribution parameter. The operating time of the selected technical system is determined by a random variable, which is a mixture of exponential distributions. The main characteristics of a random variable are defined . The buyer tries to choose the type of technical device with the longest warranty period. This goal is reflected in the selection .. The article compares the mathematical expectations of the warranty period for the selected type of technical device with equal sets and for sets that depend on the warranty period for each type of technical device.