A farmer wishes to work out the average milk yield in his herd that consists of an equal number of Ayrshire, Friesian, Galloway, and Jersey cows.Suppose the farmer samples the 12 cows in his barn that are closest to where he enters the barn. What type of sampling is being used?
A. quota sampling
B. stratified sampling
C. convenience sampling
D. simple random sampling
E. capture-recapture
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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A. 
B. 
C. 
D. 
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