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SAT, 12.07.2019 07:00 yettionajetti

Agroup of veterinary researchers plan a study to estimate the average number of enteroliths in horses suffering from them. previously research has shown the variability in the number to be σ = 2. the researchers wish the margin of error to be no larger than 0.5 for a 99% confidence interval. to obtain such a margin of error the researchers need at least:

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