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Which of the following would increase the width of a confidence interval?

Changing from a 99% to 95% confidence level.
Increasing the variability of the outcome.
Increasing the sample size.
Removing an outlier from the data

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Susie

  1. If you don't know the right alternative, possibly you could find it by eliminating the false alternatives.

    Increased variability

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    PsyDAG

  2. Increasing the variability of the outcome.

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    smoothjive

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