A researcher wants to determine whether there is a significant difference in mean anxiety scores between students who attend online lectures and those who attend face-to-face lectures. Each student participates in only one type of lecture. What is the appropriate null hypothesis for an independent-samples t-test?

Question

Answer

The mean anxiety score of online lecture students is higher than that of face-to-face lecture students.

Answer

The difference in anxiety scores within the same students is zero.

Answer

The mean anxiety score of online lecture students is lower than that of face-to-face lecture students.

Answer

The mean anxiety score of online lecture students is equal to the mean anxiety score of face-to-face lecture students.

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A researcher wants to determine whether there is a significant difference in mea...

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