Find the margin of error

Question

Any recent poll 190 people were asked if they like dogs and 63% said they did find the margin of error of this poll at the 90% confidence level

Answer 1

ME = z-critical * SE

z-critical = 1.645 for 90% confidence level

SE = sqrt(phat * (1-phat)/n),

where n = 190 and phat = 0.63