How many people would need to be surveyed on health care to estimate the mean of an entire population within 2 units if the standard deviation was 12 and we wanted a 92% confidence level? Thank you in advance!!

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How many people would need to be surveyed on health care to estimate the mean of an entire population within 2 units if the standard deviation was 12 and we wanted a 92% confidence level? Thank you in advance!!

Algebra
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Confidence interval for population mean \(\large \mu\) is Sample Mean \( \pm \) Margin of Error Margin of error = (confidence coefficient)*Standard error of mean Margin of error = 2
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