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I believe that the population mean number of times a person bought hot coffee in a...

I believe that the population mean number of times a person bought hot coffee in a week is less than 4 per week. I spoke with 12 people and they said the number of coffees they bought per week are as follows 5, 3, 5, 2, 1, 0, 5, 4, 4, 2, 3, and 5. Assume a 95% confidence interval and assume a random sample.

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