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Mathematics, 19.03.2021 18:20 Carlyalexis641

A psychologist is interested in the mean IQ score of a given group of children. It is known that the IQ scores of the group have a standard deviation of 14. The psychologist randomly selects 90 children from this group and finds that their mean IQ score is 98. Based on this sample, find a 90% confidence interval for the true mean IQ score for all children of this group. Then give its lower limit and upper limit.

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