Professor Marshall Wants to Know Whether Eating Sweets Before Bedtime

question 141

Multiple Choice

Professor Marshall wants to know whether eating sweets before bedtime causes children to take longer to fall asleep. In his experiment, whether or not a sweet is given before bedtime is the:

• A) independent variable.
• B) dependent variable.
• C) control variable.
• D) extraneous variable.

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A professional cleaning service provided to businesses, schools, and residential complexes, maintaining the cleanliness of facilities.

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