Consider the file data on Taxes that is included in worksheet P5 on the exam template. This data represents property taxes paid by 170 residents that live in a small town. Total cost of property tax for each homeowner is in column c. Note there are 6 different neighborhoods in the small town; this is designated in column b. Assume this file to be the entire population of the small town. Answer the following questions : (15 pts) a) What are the 90% confidence interval values for the population data, the 170 residents? b) Using the data in part a, what sample size would be required to be 95% sure that the estimate is within $100 (that is UL - LLI = 100)? c) How would the sample size value change for a one sided interval (+$50) d) What are the 90% confidence intervals for the residents whom live in neighborhood 6