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In a large population of college educated adults the main IQ is 112 with standard deviation 25. Supposed 300 adults from this population are randomly
In a large population of college educated adults the main IQ is 112 with standard deviation 25. Supposed 300 adults from this population are randomly selected from a market research campaign. The probability that the sample mean IQ is greater than 115 is. 0.019 0.981 0.528 0.452
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