Question: For the data in problem 22, the correlation between the children's scores and the biological parents' scores is r = 0.709. Does adding the adoptive

For the data in problem 22, the correlation between the children's scores and the biological parents' scores is r = 0.709. Does adding the adoptive parents' scores as a second predictor significantly improve the ability to predict the children's scores? Use α = .05 to evaluate the F-ratio.

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