In a sample of 12 participants a researcher estimates the


In a sample of 12 participants, a researcher estimates the 80% Confidence Interval for a sample with a mean of M = 22.3 and an estimated standard error (SM) of 4.7. What is the confidence interval at this level of confidence?

A. 80% CI 12.1, 32.5

B. 80% CI 17.6, 27.0

C. 80% CI 15.9, 28.7

D. Not enough information to answer

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Basic Statistics: In a sample of 12 participants a researcher estimates the
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