FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A researcher is interested in investigating whether people perform better at dexterity tests while listening to classical music or to no music. He designs a dexterity test, and first gives it to his participants while classical music is playing, and then while no music is playing.
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z-test, since the researcher can find the standard deviation of his population.
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Not enough information is given to determine the best type of test.
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Paired t-test, since there are two sets of measurements on the same subjects, providing a natural linking.
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Two-sample t-test, since how a subject performs with music should have no influence on how he performs without music, creating two independent samples.
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Explanation:
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