phamleson8697
phamleson8697
13.07.2021 • 
Business

An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in California. Suppose that the mean income is found to be $21.1 for a random sample of 1530 people. Assume the population standard deviation is known to be $11. Construct the 90% confidence interval for the mean per capita income in thousands of dollars.

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