SOLUTION: A 95% confidence interval for the mean of a normal population is found to be 13.2 < µ < 22.4. What is the margin of error? A. 4.6 B. 4.4 C. 4.2 D. 5.6

Algebra ->  Human-and-algebraic-language -> SOLUTION: A 95% confidence interval for the mean of a normal population is found to be 13.2 < µ < 22.4. What is the margin of error? A. 4.6 B. 4.4 C. 4.2 D. 5.6      Log On


   

Question 939439: A 95% confidence interval for the mean of a normal population is found to be 13.2 < µ < 22.4. What is the margin of error?
A. 4.6
B. 4.4
C. 4.2
D. 5.6
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
%2822.4-13.2%29%2F2 = 4.6
and...checking
(22.4-4.6) = 17.8)
CI: 17.8-4.6 < µ < 17.8+4.6
CI: (13.2, 22.4)