Answer number 8, 9,and 10 please and thank you!

8) (4 pts) Identify the population and the sample in this study: Government officials in the state of Texas want to know what percent of property owners have protested their property taxes within the last year. A government official contacts the tax assessors from 43 counties in Texas and receives the necessary property tax data from 12, 613 property owners in Texas. The Population is 9)(6 pts) Suppose we have samples of test scores from two different math test (call them A and B), and we have one score from each sample, call them XA (from sample A) and En ( from sample B). Suppose zA > ZB. Explain why we say that score IA is "relatively better." 10) (5 pts) If you are asked to calculate a standard deviation, the calculator will give you two different values. How do you decide which value to use