Professor Smith Studied the Effect of Giving Either Two, Four

question 59

Multiple Choice

Professor Smith studied the effect of giving either two, four, or eight pellets of reward to rats that ran a maze. He measured how fast they ran, and how many wrong turns they made. How many levels of the independent variable did he have?

• A) one
• B) two
• C) three
• D) can't tell

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The first of its kind product introduced into the market, which opens up a new category for consumers and typically enjoys a temporary monopoly.

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Pertaining to or providing useful or important information or data.

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