1. A survey of the residents of Lakeview asked residents if they would support a property tax increase to fund weekly curbside pickup of trash and recycling services. (Residents currently are responsible for transporting their personal trash and recyclables to the town transfer station.) The survey was given to a random sample of 1,823 residents, and 719 answered yes (they would support the tax increase) while 1,104 answered no (they would not support the tax increase). (a) Find the sample proportion (p-hat) of residents who would support the tax increase. (b) Find the standard error of this estimate. (c) Find the margin of error for a 95% confidence interval. (d) Construct the 95% confidence interval for the population proportion. (e) Does the interval suggest that more than 1/3 of residents support the tax increase? Explain your answer.

2. You take a random sample of 18 UNH students and ask them how much money they spent on textbooks last semester. Students report an average of $327 with a standard deviation of $48. Calculate a 90% confidence interval for the average amount spent on textbooks last semester by UNH students.