Question 8 (2 points) Which of the following commands will compute t-statistic of the following sample, if the population mean is 0? x = 1, 0, 2, 0, 3, 0, 100 - mean(x) / ( sd(x) / sqrt( length(x) ) ) O mean(x) / ( sd(x) / sqrt( length(x) ) ) - sd(x) / ( mean(x) / sqrt( length(x) ) ) O sd(x) / ( mean(x) / sqrt( length(x) ) )Question 12 (2 points) To estimate a simple linear regression y = a+ Bx+z. based on 25 observations, the following information is obtained: 25 25 25 : - 4)2 = 36, $2 = (y: -6)2 = 64, 5xy = ) (x; -4)(1; -6) =25 1=1 i=1 1=1 What is the values of B ? 48/25 25/36 9/16 25/ 48 36/25Question 13 (3 points) Which of the following attributes is a ratio measurement? [Multi Select Question] Ontario G, G1, G2 Drivers Licence System O education income level height O dates