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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...

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Screen Shot 2019-05-03 at 10.34.58 PM.png

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. Round your answers to one decimal place.

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