In their book Introduction to Linear Regression Analysis (4th. Edition, Wiley, 206), Montgomery, Peck, and Vinning presented measurements on NbOCI3 concentration from a tube-flow reactor experiment. The data, in gram-mole per liter x 10", are as follows. Compute the sample mean, the sample variance, the sample standard deviation, the range and the Normal Probability Plot. 450 450 473 507 457 452 453 1215 1256 1145 1085 1066 1111 1364 1254 1396 1575 1617 1733 2753 3186 3227 3469 1911 2588 2635 2725 1. What is the sample mean? (1539) 2. What is the sample variance? (917030.8462) 3. What is the sample range? (3019) 4. Construct the Normal Probability Plot