Inspectors from the food-safety division of the Department of Agriculture visit dairy farms unannounced and take samples of the milk to test for contamination. If the samples are found to contain dirt, antibiotics unsuited for human consumption, or other foreign matter, the milk will be destroyed.
(a) Population
(b) Parameter of interest
(c) Sampling frame
(d) Sample size
(e) Sampling design, including whether randomization was employed
(f) Any potential sources of bias or other problems with the survey or sample
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