7-19. The police chief of Madeliton is concerned abour the number of false alarms from home security systems his officers respond to. The alarm manufacturers, say that they are not to blame because during any given year their alarm systems correctly distinguish between criminal activity and other harmless events 99.5 % of the time. Of the 319,200 residences,
Madelinton only 200 were broken into last year, but the police chief says his officers responded to hundreds more false alarm calls. How many calls are the police likely to receive from home alarm systems in a year? If the Madelinton police department receives a call from a home alarm system, what is the probability it is the result of criminal activity?