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CHAPTER LESSONS - PREMIUM
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Confidence Interval Width vs. Confidence Level (Q2c–d)

Smaller confidence intervals are better as they give us a more precise estimate of the mean. A simple way to affect the width of the interval is to change the confidence level. Watch here to see how.


Test your understanding:

  1. Question 1 of 2

    If the the value of 1-α is reduced, the confidence interval:

    • 1.
    • 2.
    • 3.
    • 4.