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4. 5 points) in an old study the weight of a certain breed of pig had a standard deviation of 8 pounds. What sample size
4. 5 points) in an old study the weight of a certain breed of pig had a standard deviation of 8 pounds. What sample size should be used to estrate the mean weight of that breed of pig for a new study? Assume a margin of ano of 1.3 pounds and a obnfidence level of 95% desired
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