Suppose a random sample of 1,220 U. S. adults were asked about their opinion regarding federal spending on infrastructure (i.e. roads and bridges). Respondents were asked whether federal spending on infrastructure was (a) too low, (b) adequate, or (c) too high. Respondents were classified by income level. Choose the correct hypotheses to test whether there is an association between the response to the question and income level.
A)H0 : There is no difference between the proportions of U.S.adults who responded (a), (b) or (c) to the opinion question.
Ha: There is a difference between the proportions of U.S.adults who responded (a), (b) or (c)
To the opinion question.
B)H0 : Among U.S.adults, opinions about federal spending on infrastructure and income level are associated.
Ha: Among U.S.adults, opinions about federal spending on infrastructure and income level are
Independent.
C)H0: Among U.S.adults, opinions about federal spending on infrastructure and income level are independent.
Ha: Among U.S.adults, opinions about federal spending on infrastructure and income level are
Associated.
D)None of the above

Question

Quizplus · Accepted Answer

The correct hypotheses for testing an association between two categorical variables (in this case, opinion on federal spending and income level) are that the variables are independent under the null hypothesis (H0) and associated under the alternative hypothesis (Ha).

Suppose a Random Sample of 1,220 U