Calculate the 90% confidence interval for a sample of N = 25 with a mean = 2.75 and standard error of the mean = .19.
A) 90% CI = 2.75 ± .33
B) 90% CI = 2.75 ± .53
C) 90% CI = 2.75 ± 1.90
D) 90% CI = 2.75 ± .39

Question

Calculate the 90% confidence interval for a sample of N = 25 with a mean  = 2.75 and standard error of the mean  = .19.
A) 90% CI = 2.75 ± .33 
B) 90% CI = 2.75 ± .53 
C) 90% CI = 2.75 ± 1.90 
D) 90% CI = 2.75 ± .39

Quizplus · Accepted Answer

The Answer of Calculate the 90% confidence interval for a sample of N = 25 with a mean  = 2.75 and standard error of the mean  = .19.
A) 90% CI = 2.75 ± .33 
B) 90% CI = 2.75 ± .53 
C) 90% CI = 2.75 ± 1.90 
D) 90% CI = 2.75 ± .39

Calculate the 90% Confidence Interval for a Sample of N