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The Roman Arches is an Italian restaurant. The manager wants to estimate the average amount a...

The Roman Arches is an Italian restaurant. The manager wants to estimate the average amount a customer spends on lunch, Monday through Friday. A random sample of 100 customers' lunch tabs gave a mean of $8.75 and a population standard deviation of $2.04.
Construct a 90% confidence interval for the average amount spent on lunch by all customers.
Math   Statistics-And-Probability   
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