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A Lawn Service Owner Is Testing New Environmentally Friendly Weed

Question 2

Essay

A lawn service owner is testing new environmentally friendly weed killers. He discovers that a particular weed killer is effective 89% of the time. Suppose that this estimate was based on a random sample of 60 applications. Construct a 90% confidence interval for p, the true proportion of weeds killed by this particular brand.

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verifed

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