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 10?
Definitions:
Employee's Successful Performance
The degree to which an employee effectively fulfills the responsibilities and goals of their job role.
Person-Fit Models
Psychological models that emphasize the compatibility between an individual’s characteristics and the demands or attributes of a specific environment.
Job Interaction
The dynamics and relationships between employees or between employees and their tasks in the workplace.
Personal Disposition
An individual's inherent qualities of mind and character that influence their behavior and reactions.
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