Asmall company involved in e-commerce is interested in statistics concerning the use of e-mail. a poll found that 39% of a random sample of 1127 adults, who use a computer at their home, work, or school, said they do not send or receive e-mail.

(a) find the margin of error for this poll if we want 99% confidence in our estimate of the percent of american adults who do not use e-mail. (round to three decimal places as needed.)
(b) explain what that margin of error means.
(c) if we want to be 90% confident, will the margin of error be larger or smaller? find that margin of error. (round to three decimal places as needed.)
(d) in general, if all other aspects of the situation remain the same, will smaller margins of error involve greater or less confidence in the interval?