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A psychologist is interested...

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 70 children from this group and finds that their IQ score is 109. Based on this sample, 95% confidence interval for the true mean IQ score for all the children of this group.

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What is the lower limit of the 95% confidence interval and the upper limit of the 95% confidence interval

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