This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Section 4.4 Page 1 Estimation of Proportions Point Estimate gG g gggg For a large enough sample, size, the sampling distribution of follows a normal distribution. (1 )x100% Confidence Interval z 2 1 n Example. Historically, 10% of homes in Florida have radon levels higher than recommended by the EPA. A city in north central Florida has hired an environmental consulting group to determine whether is has a greater than normal problem with radon gas. A random sample of 200 homes indicated that 25 had radon levels exceeding EPA recommendations. Construct and interpret a 95% confidence interval for the true proportion of homes with excessive levels of radon. Section 4.4 Page 2 Hypothesis Testing Steps in Hypothesis Testing 0. Check Assumptions 1. State Hypotheses and Set 2. Compute the Test Statistic 3. Find the critical region or calculate pvalue 4. Draw Conclusion...
View
Full
Document
This note was uploaded on 10/03/2011 for the course STAT E509 taught by Professor Wheatley during the Spring '10 term at South Carolina.
 Spring '10
 Wheatley
 Normal Distribution

Click to edit the document details