Question: How many samples do I need? And how do i get there. A field is to be surveyed for pesticide residues. Other fields treated in

How many samples do I need? And how do i get there.

A field is to be surveyed for pesticide residues. Other fields treated in similar ways have been shown to have residues of 40200g/g. with a standard deviation of about 30g/g. If an error level of 3g/g is acceptable, how many samples are needed to be 95% confident that the requirement. is met

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