A Manager Is Interested in the Amount of Time Employees

question 163

Multiple Choice

A manager is interested in the amount of time employees spend each day playing video games at work.The manager takes a random sample of 18 employees who showed a mean time of 55 minutes per day with a standard deviation of 5 minutes.Assuming that these times follow a normal distribution,compute a 90% confidence interval for the average amount of time employees spend playing video games each day at work.

• A)[52.39,57.61]
• B)[52.95,57.05]
• C)[52.82,57.18]
• D)[53.34,56.66]
• E)[52.46,57.54]

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