A survey conducted by FlexiJobs of randomly selected respondents from Vista City’s population of part-time job employees shows that a part-time employee works an average of 22 hours per week. This average has a margin of error of 1.5 hours at the 95% confidence level. What is the most plausible interpretation for this survey result?
95% of the part-time employees in Vista City work between 20.5 hours and 23.5 hours per week.
95% of all employees in Vista City work between 20.5 hours and 23.5 hours per week.
We are 95% confident that the true average number of work hours of part-time employees in Vista City lies between 20.5 hours and 23.5 hours per week.
We are 95% confident that the true average number of work hours of all employees in Vista City is between 20.5 hours and 23.5 hours per week.
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