Question

Please help!?
6. Study results indicate that the mean length of time people spend on a bus in a city is between 21.2 min and 24.5 min.

What is the study's margin of error?

Answer 1

Assuming that the study involved sampling, the two values of waiting time would represent a confidence interval.
The margin of error is the distance between the center of a confidence interval to the end of the interval, in other words a quantity half the width of the confidence interval.
The width of the confidence interval is 24.5 - 21.2.
\[\large Margin\ of\ error=\frac{24.5-21.2}{2}=you\ can\ calculate\]

Answer 2

Thanks c:

Answer 3

You're welcome :)