A marketing researcher at a computer company did a study examining user satisfaction with two operating systems.A total of 300 users were surveyed on the type of operating system used and their satisfaction with it.Use the following data set to answer questions 6-14: 
What is the probability that a person uses system 9?
Definitions:
Progressive Insurance
An insurance company that offers policies for vehicles, property, and other personal assets, known for offering customized coverage options.
Driving Patterns
The behaviors and habits of drivers, including speed, routes taken, and times of travel, which can impact fuel consumption, traffic flow, and road safety.
Safety Equipment
Tools and devices designed to protect individuals from injury or harm, especially in workplaces.
Expected Loss
The anticipated amount of loss a party might suffer in an investment or venture, taking into account the likelihood of various outcomes.
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