Calculate the margin of error and construct the confidence interval for the population mean (you may assume the population data is normally distributed): a. x =99.4,n=70,σ=1.25,α=0.1 E= Round to 3 significant digits a. x =99.4,n=70,σ=1.25,α=0.1 E= Round to 3 significant digits Round to 2 decimal places b. x =51.3,n=96,σ=12.6,α=0.05 E = 罒 Round to 3 significant digits