(Answered) The distribution of iq scores is approximately normal with

Economics

The distribution of IQ scores is approximately normal with a population mean of 100 and a population standard deviation of 15. A researcher claims that the intelligence of children in a particular community is above the population mean. A sample of n = 9 children in the community, when tested, yields a sample mean of 112.8. Does this sample support the researcher's claim at a significance level of .05?

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