Design and plot a critical ratio for a computer installation project that had planned constant, linear progress from $0$ to an earned value of $200$ over a $100-$day duration. In fact, progress for the $$rst $20$ days has been: $2,3,4,6,7,9,12,14,15,17,20,21,21,22,24,26,27,29,31,33.$ What can you conclude about this project?