Calculate the 95% confidence interval for a sample of N = 30 with a mean = 7.12 and standard deviation (s) = 3.67.
A) 95% CI = 7.12 ± 1.37
B) 95% CI = 7.12 ± 1.14
C) 95% CI = 7.12 ± 1.84
D) 95% CI = 7.12 ± 2.72

Question

Calculate the 95% confidence interval for a sample of N = 30 with a mean  = 7.12 and standard deviation (s) = 3.67.
A) 95% CI = 7.12 ± 1.37 
B) 95% CI = 7.12 ± 1.14 
C) 95% CI = 7.12 ± 1.84 
D) 95% CI = 7.12 ± 2.72

Quizplus · Accepted Answer

The Answer of Calculate the 95% confidence interval for a sample of N = 30 with a mean  = 7.12 and standard deviation (s) = 3.67.
A) 95% CI = 7.12 ± 1.37 
B) 95% CI = 7.12 ± 1.14 
C) 95% CI = 7.12 ± 1.84 
D) 95% CI = 7.12 ± 2.72

Calculate the 95% Confidence Interval for a Sample of N