Given are five observations for two variables, a: and 3}. Use Table 2 of Appendix B. Round your answers to two decimal places. a. Using the following equation: Estimate the standard deviation of 3'} * when a: = 4. b. Using the following expression: A y * ita/zssr Develop a 95% condence interval for the expected value of y when m = 4. to c. Using the following equation: Estimate the standard deviation of an individual value of y when m = 4. d. Using the following expression: A y * ita/Z spred Develop a 95% prediction interval for y when m = 4. t0