1Statistics: An IntroductionFifth Edition421Section 10: Inferential Techniques for ProportionsA. IntroductionRecall that for large n(n≥100) the sampling distribution for a proportion if approximately normal with standard errorB. Hypothesis TestsHypothesis tests for proportions can be conducted based on this sampling theory.p(1)n422Section 10: Inferential Techniques for ProportionsExample: Poll. Question: Does the proportion of students at the University of Iowa that approve of the job Culver is doing as Governor differ from .50?Study: Randomly sample 100 students and find proportion approving in the sample.Step 1. State null and alternative hypotheses.5.:5.:5.:210HHH
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