Problem #3: Consider the below matrix A, which you can copy and paste directly into Matlab. The matrix contains 3 columns, which represent the final grades in a course with 3 sections of equal size. The first column is C01, the second is CO2, and the third is C03. A = [57.36 36.61 84.36;81.66 87.37 29.36,50.6 36.76 100;29.57 6.45 75.96;93.68 83.6 73.97;23.22 55.98 17.11;47.91 49.99 100;35.57 62.62 30.25;42 7.86 43.35;16.87 100 100,70.79 11.85 16.03;100 72.86 32.79;89.25 31.81 37.43;68.48 11.75 98.61;20.44 72.16 27.41;68.05 39.65 87.93;100 8.67 85.98;40.5 42.65 82.18;36.24 92.75 83.06;62.85 48.36 83.77;48.56 83.41 58.51;90.36 9.97 37.57;50.84 37.38 37.8;93.9 51.15 46.25;63.36 65.93 20.72;87.22 73.63 45.25;18.76 24.74 56.72;92.67 12.89 52.31:11.62 50.73 61.93;46.06 100 48.29;17.38 76.55 95.81;57.47 38.68 100;36.09 17.64 79.18;87.78 100 78.14;10.47 42.08 100;89.14 52.35 97.78;18.91 63.85 18.27;67.6 34.6 19.06;47.99 39.29 19.8;60.21 56.02 86.82;17.44 83.9 68.15;59.81 30.76 50.03;100 56.48 82.3;37.93 46.31 97.5;31.56 68.13 100;100 21.87 95.52;62.83 51.2 56.87,56.05 65.56 62.61;31.35 85.65 100;46.64 62.84 26.59;84.81 47.83 29.38;57.85 96.31 34.04;49.51 33.35 47.57;52.18 22.27 97.41;64.64 58.39 48.3;91.41 38.14 34.56;100 100 94.94;18.19 37.31 60.94;58.18 32.86 100;42.51 21.26 100;35.31 40.7 65.49,23.39 15.32 100;12.75 8.42 44.93;88.52 63.02 100;17.48 43.16 91.97;100 34.78 64.36;75.91 91.55 71.58;100 29.27 98.95;11.8 94.09 51.48;40.59 96.47 92.57;16.48 83 60.87;38.54 82.77 24.78;92.63 6.55 77.49;35.5 45.37 85.58;29.28 64.16 64.09;86.56 93.91 33.02;63.82 76.28 45.08;67.63 48.75 57.75,72.78 18.9 100;54.16 72.96 46.76;51.38 31.97 35.04;93.27 32.36 67.92;47.56 18.7 44.92;18.61 98.8 68.02;23.14 21.96 92.04;20.05 72.45 33.38;37.18 31.51 35.84;90.78 18.03 50.33;41.31 14.29 66.24;21.01 86.51 78.04;93.25 100 80.46;21.46 5.25 52.67;90.37 27.96 18.86;10.08 43.71 95.51;100 34.92 67.01;75.04 70.63 26.07;35.41 69.22 100;74.32 46.96 66.45;19.86 18.15 100;75.7 57.93 87.74;100 6.66 89.34;62.67 49.14 96.35,87.36 6.26 51.23,94.05 53.98 65.05,79.26 98 28.67;21.97 81.85 62.4;76.79 75.52 58.21;100 76.42 20.61;67 90.03 37.46;50.93 38.6 100;14.57 58.63 37.5;24.87 100 59.41,20.31 18.15 98.43;21.74 77.32 100;35.41 13.6 44.45,96.31 63.71 48.1;67 59.45 100;43.28 89.94 62.75;77.88 100 39.73;65.72 42.93 50.88;29 6.1 38.34;36.94 16.36 52.94;11.59 95.7 55.78;54.82 100 95.96;46.05 69.05 82.17;100 92.72 73.21;26.32 82.35 100;21.24 9.27 79.86;58.21 8.03 17.26;30.49 24.98 67.26;58.03 45.3 18.13;71.93 43.09 96.19;17.19 44.98 15.95;100 31.69 100;100 38.39 100;84.16 12.94 66.43;84.05 43.49 78.18;36.46 90.24 79.14;37.05 56.5 100;40.76 75.44 66.41;60.49 15.15 38.7;14.33 39.21 57.38;36.02 54.76 72.63;13.91 22.73 100;100 61.21 57.36,98.54 96.43 100;60.34 35.73 86.61;21.395.73 23.71] (a) Use the colon operator to extract the marks from C01, and then find the average of those marks (using the 'sum' and 'length' commands). (b) Use vertical concatenation to create a single column vector consisting of all of the marks from all 3 sections. Then find the overall class average
