A small company involved in e-commerce is intersted in statistics concerning the use of e-mail. A poll found that 39% of a random sample of 1079 adults, who use a computer at their home, work, or school said that they do not send or recieve emails..
A- If we want to be 95% sure, what will the margin of error be?
B- If we want to be 90% sure, what will the margin of error be?