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?

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

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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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