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A researcher measures mean health scores of children at a local school and compares these scores to the mean health score in the general population.

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A researcher measures mean health scores of children at a local school and compares these scores to the mean health score in the general population. Assuming that the population variance is known, what statistical test is appropriate for this study? O z-test for the sample mean O single-sample t-test O related-samples t-test O independent-samples t-test

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