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Question
It has been hypothesized that on average employees spend one hour a day playing video games at work. To test this at her company, a manager takes a random sample of 35 employees, who showed a mean time of 55 minutes per day with an assumed population standard deviation of 5 minutes. Calculate a confidence interval to test the hypotheses that the employees spend a different amount of time from one hour (60 minutes) at 
= .02 and interpret.
Answer
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