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.
A)Paired t-test,since there are two sets of measurements on the same subjects,providing a natural linking.
B)1-sample t-test,since there is only one sample of subjects taking the dexterity tests.
C)Not enough information is given to determine the best type of test.
D)z-test,since the researcher can find the standard deviation of his population.
E)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.

Question

Quizplus · Accepted Answer

The paired t-test is appropriate because the same subjects are tested under two different conditions, creating a natural pairing of the data.

A Researcher Is Interested in Investigating Whether People Perform Better