Given are five observations for two variables, x and y. (Round your answers to two decimal places.) Xi 2 3 4 5 yi 4 7 6 11 14 (x* - x) 2 (a) Use So* = 51 + to estimate the standard deviation of y* when x = 3. n E(x; - x)- (b) Use y* + t 25 x to develop a 95% confidence interval for the expected value of y when x = 3. to (c) Use Sped = S1/ 1 + + (x* - x)2 to estimate the standard deviation of an individual value of y when x = 3. n E(x - x)' (d) Use y* + t /25pe to develop a 95% prediction interval for y when x = 3. to