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A poll taken this year asked 1015 adults whether they were fans of a particular sport...

A poll taken this year asked 1015 adults whether they were fans of a particular sport and 40​% said they were. Last​ year, 39​% of a​ similar-size sample had reported being fans of the sport. Complete parts a through e below.

a.) Find the margin of error for the poll taken this year if one wants 90% confidence in the estimate of the percentage of adults who are fans of the sport.

b.) Explain what margin of error means

c.) If one wanted to be 99​% confident instead of 95​% ​confident, would the margin of error be larger or​ smaller?

Math   Statistics-And-Probability   
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