In a recent poll of 1100 randomly selected adult bicyclists, 26% said they regularly ride their bikes to work. What is the margin of error, using 95% confidence level for estimating the true...

In a recent poll of 1100 randomly selected adult bicyclists, 26% said they regularly ride their bikes to work.  What is the margin of error, using 95% confidence level for estimating the true population proportion of adult bicyclists who regularly ride their bikes to work ?