Question

Study results indicate that the mean length of time people spend on a bus in a city is between 21.2 minutes and 24.5 minutes. What is the study's margin of error?

Answer 1

+/- 1.65

Explanation:

The margin of error will be the difference divided by two with a plus and minus sign

So we have;

24.5 - 21.2

= 3.3

Divide by 2

3.3/2

= 1.65

The margin error is therefore

+/- 1.65