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you are asked to conduct a study to determine whether there is an association between consumption...

you are asked to conduct a study to determine whether there is an association between consumption of milk proteins and levels of serum antibodies in children. You randomly select 50 children previously enrolled in a clinical trial and they are the sample for the study. You select an alpha of 0.05 and a power of 0.80. Talk about the sample size of 50 participants. Why or why isn't this a good size sample?

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