Continuity of content in the study of probability theory at school and university

This article provides examples of the continuity of the school course of mathematics and specialized technical disciplines. The problems of applying the laws of probability theory in relation to reloading equipment are considered. The presentation of tasks follows the principle of a spiral structure based on a return to knowledge already studied, and the content is gradually expanded, enriched with new information, connections, and dependencies. The influence of the operating time on the change in the mechanical characteristics of the material is analyzed. Using the Grubbs and Fisher criterion, the possibility of combining two samples into one general population is considered. A confidence interval is constructed depending on the values of the probability of failures.