confidence Intervals

1. Compute a Confidence Interval with given SE. A poll was conducted to determine who was ahead in a political race for Governor. The survey found that 321 of 550 planned to vote for the incumbent. The standard error of this estimate was about 0.021. Compute a 95% confidence interval for this survey. Remember that the 95% confidence interval can be calculated: point estimate +1.96.SE For this problem round the point estimate to 3 decimal places, if needed. Fill in the blanks: +1.96. Resulting in a confidence interval of ( ) Keep the interval as a decimal rounded to 3 decimal spots, not a percent. Compute a Confidence Interval with given SE. 2. A employee in city planning office believes many people are moving into their city from out of state. They conduct a randomly selected survey of residents. Of the 154 residents they find that 63 are out-of-state transplants. This "pp^ is a point estimate for all residents in the city who are out-of-state transplants. What is the point estimate, "pp^? Round to 3 decimal places, if needed. The standard error of this experiment is 0.04. Compute a 90% confidence interval for all residents who are out-of-state move- ins. Remember to calculate a confidence interval you utilize: point estimate + z*. .standard error You may want to use this table to find z* You may want to use this table to find z* Fill in the blanks