1. A dataset includes the following variables for 500 people:

Household income: continuous, not normally distributed

Urbanicity: 3 categories (rural, urban, suburban)

Distance to a superfund site: continuous, normally distributed

Cancer diagnosis: Yes or No

Select 3 combinations of 2 variables (e.g., cancer diagnosis and distance to a superfund site).

For each combination, state what test of significance is appropriate to test for a relationship between the 2 variables.

Write the null and alternative hypothesis for each of the 3 tests of significance.