Social Studies, 22.04.2020 03:35 sarahlearn3

You want to be able to estimate the average IQ of people in Winston-Salem. You would be satisfied knowing the average IQ plus-or-minus 5IQ points(using a 90% confidence interval). The standard deviation for IQ tests is typically 15 points; so you’ll use that as a guideline. How many people would you need to survey in order to be able to estimate the average to your desired degree of accuracy?

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