For the data in problem 22, the correlation between the children's scores and the biological parents' scores

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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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Statistics For The Behavioral Sciences

ISBN: 9781111830991

9th Edition

Authors: Frederick J Gravetter, Larry B. Wallnau

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