Confidence Intervals

1. Compute a Confidence Interval with given SE. 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 p is a point estimate for all residents in the city who are out-of-state transplants. What is the point estimate, 'p? 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: confidence Level 2" point estimate tz*-standard error 90to 1.65 95/b 1. 76 28 10 2-33 You may want to use this table to find z* 99 10 Fill in the blanks 2.58 Resulting in a confidence interval of ( Keep the interval as a decimal rounded to 3 decimal spots, not a percent. 2. You intend to estimate a population proportion with a confidence interval. The data suggests that the sampling distribution of p^ is approximately normal. While it is an uncommon confidence level, find the critical value that corresponds to a confidence level of 81.7%. (Report answer accurate to 2 decimal places with appropriate rounding.) 2* =1