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Answer:
The three-dimensional surface represented by the equation x+y=2 is an inclined plane, as seen in the image.
The statistical test that would be most appropriate determine the answer the researcher is interest in knowing is a chi-square test.
<h3>What is a chi-square test?</h3>A chi-square test is a statistical test used to test the relationship between categorical variables. It is used to determine the difference between the expected data and the observed data is due to chance.
Chi squared =
Where:
= observed value
= expected value.
The researcher is interested in knowing if the response to lowering the legal age for drinking alochol (observed value)) varies by gender (expected value). Thus, a chi-square test would be used.
To learn more about chi-square, please check: brainly.com/question/14082240