To build a bootstrap distribution for the mean log ratio, what should be resampled with replacement?

Question

Answer

The 30 participants, keeping each person's two times together.

Answer

The 60 individual task times, ignoring which participant each came from.

Answer

The order in which each participant happened to use the two layouts.

Answer

The 30 Layout A times and 30 Layout B times, separately from each other.

Answer

The labels A and B, swapped within each participant at random.

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