Mathematics, 19.11.2019 05:31 alananicoleee
An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in texas. he believes that the mean income is $20.4, and the standard deviation is known to be $8.8. how large of a sample would be required in order to estimate the mean per capita income at the 98% level of confidence with an error of at most $0.54$? round your answer up to the next integer.
Answers: 2
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![n=[\frac{z_{\frac{\alpha}{2}}\times \sigma}{E}]^2](/tpl/images/0380/7967/11f83.png)
![=[\frac{2.33\times 8.8}{0.54}]^2](/tpl/images/0380/7967/f035b.png)
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An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city...
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