(Answered) A random sample of 97 customers who visited a department

Finance

A random sample of 97 customers, who visited a department store, spent an average of $ 71 at this store. Suppose the standard deviation of expenditures at this store is σ = $ 21. The 98% confidence interval for the population mean (rounded to two decimal places) is:

The lower limit is $

The upper limit is $

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