Which ONE of the following is the benefit of using simple random sampling? Select one: A. The results are always representative. OB. Interviewers can choose respondents freely. OC. We can calculate the accuracy of the results. QD. Informants can refuse to participate 4 Your answer is incorrect.

Q: Can this be done by a person ?

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A: Given that the expression is

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A:

Q: So whats the answer

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Q: b and c are all wrong. please do them correct.

A: The regression equation is: .