A recent survey reported that 52% of American adults surveyed consider the amoun

Question

A recent survey reported that 52% of American adults surveyed consider the amount of federal income tax that they pay is too high (n = 1021, margin of error is 3%). The poll was carried out by telephone (or, more specifically, by random-digit dialing), so people without phones are always excluded from the sample. Any errors in the final result due to excluding people without phones

A. are included in the announced margin of error.

B. are in addition to the announced margin of error.

C. can be ignored, because these people are not part of the population.
D. can be ignored, because this is a nonsampling error.

Explanation / Answer

Any errors in the final result due to excluding people without phones can be ignored, because this is a nonsampling error.

Option D is correct,

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