Question

Suppose you calculate a 99% confidence interval of 14.53 to 20.68. determine the margin of error g

Answer 1

The margin of error is 3.075

Explanation:

Firstly, we proceed to calculate the mean

Mean = ( upper CI + lower CI)/2

= (20.68 + 14.53)/2 = 17.605

The margin of error is upper CI minus mean

That would be;

20.68 - 17.605 = 3.075