The company wants an estimate of the average difference in completion time, in seconds, between the layouts for the same users. Which analysis output should be used?

Question

Answer

Analysis 1, because it compares the mean times of the two layouts using all 60 times.

Answer

Analysis 1, because the two layouts were tested on two separate groups of people.

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Analysis 3, because it reports the difference on the original scale of seconds.

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Analysis 3, because it is the only analysis that accounts for people being measured twice.

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Analysis 2, because it compares each person's Layout A time with their own Layout B time.

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The company wants an estimate of the average difference in completion time, in s...

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