14. 1. Given are five observations for two variables, x and y. xiyi142736412513 Round your answers to two decimal places. a. Using the following equation: sj=sn1+(xix)2(xx)2 Estimate the standard deviation of y when x=4. b. Using the following expression: y^tan5y Develop a 95% confidence interval for the expected value of y when x=4. c. Using the following equation: smed=s1+n1+(xix)2(xx)2 Estimate the standard deviation of an individual value of y when x=4. d. Using the following expression: ytan5rand Develop a 95% prediction interval for y when x=4. If your answer is negative, enter minus () sign. 14. 1. Given are five observations for two variables, x and y. xiyi142736412513 Round your answers to two decimal places. a. Using the following equation: sj=sn1+(xix)2(xx)2 Estimate the standard deviation of y when x=4. b. Using the following expression: y^tan5y Develop a 95% confidence interval for the expected value of y when x=4. c. Using the following equation: smed=s1+n1+(xix)2(xx)2 Estimate the standard deviation of an individual value of y when x=4. d. Using the following expression: ytan5rand Develop a 95% prediction interval for y when x=4. If your answer is negative, enter minus () sign