Scenario/Research Question: What impact do zinc supplements have on birth weight of full-term infants? Variables: Independent - zinc supplements - ordinal level of measurement Dependent - birth weight - interval level of measurement Population: full-term infants Null Hypothesis: There is no impact of zinc supplements on the birth weight of full- term infants. O one-sample t-test O paired samples t-test O one-way ANOVA O independent samples t-test