Question

A small company involved in​ e-commerce is interested in statistics concerning the use of​ e-mail. A poll found that 37% of a random sample of 1122 adults, who use a computer at their​ home, work, or​ school, said they do not send or receive​ e-mail. Complete parts a through e.

​a) Find the margin of error for this poll if we want 90​% confidence in our estimate of the percent of American adults who do not use​ e-mail.

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?

d.) Find that margin of error.

e.) 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?

Answer 1

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