An economist claims that average weekly food expenditure of household in City 1 is more than that of household in City 2. She surveys 35 households in City 1 and obtains an average weekly food expenditure of $164.00. A sample of 30 households in City 2 yields an average weekly food expenditure of $159. Historical data reveals that the population standard deviation for City 1 and City 2 are $12.50 and $9.25, respectively. At the 5% significance level, is the economist claim supported by the data?
This question was answered on: Sep 21, 2023
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