A Poll Taken of 500 Voters Three Months Before the Election

question 29

Multiple Choice

A poll taken of 500 voters three months before the election showed that 55% favored the Republican candidate with a margin or error of 4%. A second poll of 500 voters taken two weeks later showed that 45% favored the Republican candidate, again with a margin of error of 4%. Consider the following possible explanations for these results.
"1) At least one of the polls is wrong since the ranges of possible values of the population
Parameter do not overlap."
2) Both polls are right, but voters changed their minds between the two polls.
"3) One of the polls selected a sample that was not representative of the population.
Which statements are possible explanations of the results?"

• A) Statements 1, 2, and 3
• B) Statements 1 and 2
• C) Statements 1 and 3
• D) Statements 2 and 3.

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Definitions:

Demand Estimation

The process of determining the expected demand for a product or service, considering various market conditions and factors.