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An average waiting time in an Emergency Room for n = 60 randomly selected patients was found as x = 25 minutes (sample mean). Find

An average waiting time in an Emergency Room for n = 60 randomly selected patients was found as x = 25 minutes (sample mean).

Find Margin of Error and Confidence Interval for the population mean of waiting time in that hospital. Population standard deviation is given, =5 min, and Confidence Level is 95%.

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