Out of 2,000 students in a high school, 800 of them were randomly selected and asked if they want the school’s mascot to change. Out of those surveyed, 250 want it to change.
With a desired confidence level of 99% and a corresponding z*-score of 2.58, what is the margin of error for this sample survey?
Complete the statements to find the margin of error.
The sample size in this problem is students.
Estimate the population proportion as .
(1 – ) = .
When the margin of error is calculated using

the formula E = z* , to the nearest tenth of a percent, the result is %.