Question: Incidence of Radon: Radon is a gas produced when radium decays, and it can enter homes and become a health threat. Among 186 homes in Hyde Park, 16 percent were found to have unsafe radon levels. Among 237 homes in Lagrange, 19 percent were found to have unsafe radon levels. Use a 0.05 significance level to test the claim that the two dutchess county regions have unsafe levels of radon. Does the level vary by region?