Mathematics, 12.08.2020 07:01 AdoNice

The wait times at restaurants in Scottsdale during peak hours are normally distributed with a population standard deviation of 2 minutes and an unknown population mean. A random sample of 50 observations is taken and results in a sample mean of 18 minutes. Identify the parameters needed to calculate a confidence interval at the 90% confidence level. Then find the confidence interval.

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