Solomon Wants to Verify That Automatic Toothbrushes Work Better Than

question 86

Multiple Choice

Solomon wants to verify that automatic toothbrushes work better than manual toothbrushes. To test this, he randomly assigns 25 participants to use a Sonicare toothbrush and 25 people to use a manual toothbrush. At the end of the study period he has a dentist inspect each participant's teeth. In this study, the _____ would be considered the independent variable, whereas the _____ would be considered the dependent variable.

• A) type of toothbrush; number of cavities
• B) manual toothbrush; automatic toothbrush
• C) automatic toothbrush; manual toothbrush
• D) number of cavities; type of toothbrush

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Definitions:

Retirement

The act of leaving one's job and ceasing to work, typically due to age, with various financial planning strategies employed to ensure financial security.

Future Interest

A legal right to property ownership, possession, or enjoyment that begins at a future date.

Effective Interest Method

A technique used in accounting to allocate the discount or premium on bonds payable over their life to interest expense, reflecting a constant rate of interest.

Semiannual

Happening every six months or twice annually.