(Solution) - A random sample of 100 households located in a large -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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A random sample of 100 households located in a large city recorded the number of people living in the household, Y, and the monthly expenditure for food, X. The following summary statistics are given.

(a) Form a 95% confidence interval for the mean number of people living in a household in this city.
(b) Form a 95% confidence interval for the mean monthly food expenses.
(c) For each case just given, interpret the results and state any assumptions you have made.