Jeff is producing an outdoor concert. He estimates that he will make 3400 dollars if it does not rain, and make 750 dollars if it does rain. The local weather station (which we'll assume is accurate in giving forecasts) predicts that the chance of rain is 22 percent for the day of the concert. What is Jeff's expected earnings from the concert?

Answer:_________dollars

A random sample of 1100 workers in a particular city found 363 workers who had full health insurance coverage. Find a 95% confidence interval for the true percent of workers in this city who have full health insurance coverage.Express your results to the nearest hundredth of a percent..

Answer:_________? % TO _________? %

A random sample of 2000 movie goers in Flagstaff found 1340 movie goers who had bought popcorn on their last visit. Find a 95% confidence interval for the true percent of movie goers in Flagstaff who have bought popcorn on their last visit.Express your results to the nearest hundredth of a percent..

Answer:________? % TO ________? %