Consider the following practice questions:

Part 2-Problems A recent study of 26 Conway, South Carolina, residents revealed they had lived at their current address for a mean Of 9.3 years, with a sample standard deviation of 2 years. a. What is the population mean? b. What is the best estimate of the population mean? c. What is the standard error of the mean? d. Develop a 90% confidence interval for the population mean. 2. A recent federal report indicated 27% of children ages 2 to 5 ate vegetables at least five times a week. How large a sample is necessary to estimate the true population proportion within 2% with a 98% level of confidence? Be sure to use the evidence in the federal report. 3. The Philadelphia Regional Transport Authority wishes to estimate the proportion of central city workers that use pub- lic transportation to get to work. A recent study reported that of 100 workers, 64 used public transportation. Develop a 95% confidence interval