Calculate the 95% Confidence Interval for a Sample with a Mean

question 20

Multiple Choice

Calculate the 95% confidence interval for a sample with a mean = 15.86 and a population standard error of the mean = 1.89.

• A) 95% CI = 15.86 ± 3.70
• B) 95% CI = 15.86 ± 3.12
• C) 95% CI = 15.86 ± 4.88
• D) 95% CI = 15.86 ± 3.85

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