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Mathematics, 10.03.2020 00:23 meje1301
In a large population of college-educated adults, the mean IQ is 118 with a standard deviation of 20. You do not know the population distribution for the IQ scores - only the population mean and the population standard deviation. Suppose 200 adults from this population are randomly selected for a market research campaign.
What is the probability that the sample mean IQ is greater than 120?
A) 0.4602 B) 0.0793 C) 0.5398 D) 0.9207
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