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Mathematics, 20.06.2021 06:30 Jsquad8879

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 10 . The psychologist randomly selects 150
children from this group and finds that their mean IQ score is 109
. Based on this sample, find a 95%
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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