2. Gifted children. Researchers collected a simple random sample of 36 children who had been identified as gifted in a large city. The following histograms show the distributions of the IQ scores of mothers and fathers of these children. Also provided are some sample statistics. 12 121 12 8 8- 8 4 4 - 4- 100 120 140 110 120 130 -20 20

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