Final answer:
The margin of error for a confidence interval with a lower limit of 81 and an upper limit of 89 is calculated to be 4, which represents the range of potential values around the mean within this interval.
Step-by-step explanation:
Calculating the Margin of Error
From the information provided, we understand that we need to calculate the margin of error for a confidence interval. The lower limit of the interval is 81e (which I assume is a typo and should read as '81') and the upper limit is 89. To find the margin of error, we take the difference between the upper limit and the mean (or vice versa), which is the same as taking half the range of the confidence interval.
The formula to calculate the margin of error (E) is.
E = (Upper Limit - Lower Limit) / 2
By substituting in the given values:
E = (89 - 81) / 2
E = 8 / 2
E = 4
Therefore, the margin of error for this sample is 4.