In an experiment to assess the relationship between nutrition and intelligence, one group of children is given a power bar containing a special vitamin supplement on a daily basis. A second group of children is given an identical-looking power bar but without the supplement. Later, all children are given an intelligence test. In this experiment, the children's scores on the intelligence test are the ______ variable.
A. independent
B. cross-sequential
C. dependent
D. control
C. dependent
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Which of the following defines “children of immigrant parents”? Children are under the age of 18 and
A. both the child and his parents are born outside of the United States. B. both of the child’s parents are born outside of the United States but the child is born in the U.S. C. one of the child’s parents is born outside of the United States. D. the child’s parents are limited English speakers and the home language is not English.
How is a null hypothesis denoted?
A. H0 B. H1 C. H2 D. H3
Which food group identified on the U.S. Department of Agriculture's food-guide pyramid is the group from which a person should eat the most servings daily?
A. Fruit B. Vegetable C. Milk, yogurt, and cheese D. Bread, cereal, rice, and pasta
In the context of the social challenges that students face in school, children from low socioeconomic backgrounds often ________.
A. exhibit low levels of distractibility B. exhibit long attention spans C. have difficulty generating new solutions to problems D. have the ability to easily monitor the quality of their work