In a survey of 500 residents 300 were opposed to the use of

In a survey of 500 residents, 300 were opposed to the use of the photocop for issuing traffic tickets. The standard error of the estimate is found to be 0.022. Find the margin of error that corresponds to a 95% confidence interval.

A. 0.40
B. 0.60
C. 0.035
D. none of these

E. 0.043

What is the formula to do this?

Solution

The margin of error that corresponds to a 95% confidence interval is:

Z 0.95*standard error of estimate

=1.96*0.022

=0.04312