Noah Gnus is the owner of a newspaper stand in Ottawa

Noah Gnus is the owner of a newspaper stand in Ottawa. He wants to obtain information on the number of copies of the Ottawa Citizen sold each weekday. A random sample 10 weekdays yielded the following data:

135 274 209 399 153 321 261 414 362 269

Compute and interpret an appropriate 90% confidence interval for the mean daily sales for all weekdays. Under what conditions is this interpretation valid?

Here’s the SOLUTION

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