A 95% confidence interval for the mean of a normal population is found to be
17.6 <h 23.6 (h looking symbol couldn't find on keyboard ) what is the margin of error ?
A 2
B 2.7
C 3
D 4
My answer is C. Am I right? But I think it could also be A.
To find the margin of error, we need to consider the formula for the confidence interval:
Margin of Error = (Upper Limit - Lower Limit) / 2
In this case, the upper limit is 23.6 and the lower limit is 17.6. So, plugging these values into the formula, we get:
Margin of Error = (23.6 - 17.6) / 2
Calculating this expression gives us:
Margin of Error = 6 / 2
Margin of Error = 3
Therefore, the correct answer is C.