4. (5 points) In a survey of 284 smokers, 197 smokers reported that they wanted to quit smoking. Compute a 90% confidence interval for the true proportion of smokers that want to quit smoking. (Adapted from the American Lung Association)

5. (5 points) When 460 junior college students were surveyed, 100 said they have a passport. Construct a 95% confidence interval for the proportion of junior college students that have a passport. Round to the nearest