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An estimate is needed of the mean acreage of farms in a certain city. A95% confidence interval should have a margin of error of 35
An estimate is needed of the mean acreage of farms in a certain city. A95% confidence interval should have a margin of error of 35 acres. A study ten years ago in this city had a sample standard deviation of 110 acres for farm size.
a. About how large a sample of farms isneeded?
n=?
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