DETAILS PODSTAT6 13.TB.002. A recent study reports that infant rats fed a special protein-enriched diet reached an adult weight 10% greater than litter-mates raised on a regular diet. For this study, what is the independent variable? O the rats given the protein-enriched diet O the rats given the regular diet O the type of diet given to the rats O the adult weight of the rats DETAILS PODSTAT6 15.TB.014. A researcher uses an analysis of variance to test for mean differences among three treatment conditions using a sample of n = 10 subjects in each treatment. In this analysis, what value of of would the F-ratio have? O df = 3, 27 O df = 29 O df = 2, 29 O df = 2, 27 DETAILS PODSTAT6 13.TB.039. The line defined by Y = -3X + 6 would slope up to the right. O True O False DETAILS PODSTAT6 15. TB.053. An F-ratio of zero (F = 0) indicates that all of the separate samples have exactly the same mean. O True O False