Use the Formula , Where = to Calculate

question 101

Multiple Choice

Use the formula , where = to calculate the 99% confidence interval for a sample of N = 15 with a mean = 7.50 and standard deviation (s) = 1.25.

• A) 99% CI = 7.50 ± .69
• B) 99% CI = 7.50 ± .56
• C) 99% CI = 7.50 ± .95
• D) 99% CI = 7.50 ± 3.30

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