Twenty-six newborn baby boys are weighed and measured for, Ask an Expert

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Twenty-six newborn baby boys are weighed and measured for length. The standard deviation of weight is 2 lb, but usual linear regression techniques reveal that 40% of the variability in weight can be explained by the relationship between weight and length. Make a test to determine whether the relationship explains a significant (a = 0.05) portion of the variability in weight.

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