Molly Has Conducted a Study That Examines Whether Exposure to Computers

question 8

Multiple Choice

Molly has conducted a study that examines whether exposure to computers increases eyestrain in children. She randomly assigns children to one of four treatment conditions dependent upon computer exposure levels. The children's eyestrain is then tested. Which of the following tests of significance is Molly likely to use?

• A) T-test
• B) Chi square
• C) ANOVA
• D) Analysis of gain scores

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Definitions:

Chorionic Villi

Finger-like projections from the chorion that extend into the uterine wall, facilitating nutrient exchange between mother and fetus.

Syncytiotrophoblast

Outer layer of the trophoblast composed of multinucleated cells.

Amniotic Cavity

A fluid-filled sac that encloses and protects the developing fetus in the uterus.

Endoderm

The innermost layer of cells or tissue of an embryo in early development, which gives rise to the lining of the digestive and respiratory systems.