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Title: In a survey of 1,000 television viewers Post by: blahhumbug on Jul 19, 2017 In a survey of 1,000 television viewers, 40% said they watch network news programs. For a 99% confidence level, the margin of error for this estimate is 3.99%. If we only want to be 90% confident, how will the margin of error change?
The margin of error will remain the same. Since less confidence allows a narrower interval, the margin of error will be larger. Since less confidence allows a wider interval, the margin of error will be larger. Since less confidence allows a wider interval, the margin of error will be smaller. Since less confidence allows a narrower interval, the margin of error will be smaller. Title: Re: In a survey of 1,000 television viewers Post by: bio_man on Jul 19, 2017 In a survey of 1,000 television viewers, 40% said they watch network news programs. For a 90% confidence level, the margin of error for this estimate is 2.5%. If we want to be 92.5% confident, how will the margin of error change?
Since more confidence requires a more narrow interval, the margin of error will be larger. that is because 92.5 has more accuracy , that means that the margin of error will be larger to select better the interval in where the proportion of population can be in the interval If you are satisfied with the answer, please mark it solved |