Test Hypotheses About a Population Proportion
-Fifty-Five Percent of Registered $\alpha$

Short Answer

Test Hypotheses about a Population Proportion
-Fifty-five percent of registered voters in a congressional district are registered Democrats. The Republican candidate takes a poll to assess his chances in a two-candidate race. He polls 1200 potential voters and finds that 621 plan to vote for the Democratic candidate. Does the Republican candidate have a chance to win? Use $\alpha$ $= 0.05$ .