im not sure what i am doing wrong please help. The lines I wrote myself were line 3 in the first box and then line 9 in the second box where it says code to call your function.

For this part of the project you will write a function with an input of the nx4 matrix described above. And calculates the total number of skis produced for that particular data set (note: not number of pairs, but number of skis). The function should be able to take an input of a quality assurance matrix as described above and output the total number of skis. \begin{tabular}{l|l} 1 & function Number_of_Skis = Calc_Total_Skis(skis) \\ 2 & % Put your_skis here \\ 3 & Number_of_Skis = sum ( skis (:,4)) \\ 4 & \\ 5 & end \end{tabular} Code to call your function ? \% Note this is just an example of a matrix that fits the form described in the project description. \% This matrix should be able to be replaced by any n-row 4 column matrix and your function should still run. Skis =[10.110.211 11.2 1.5 11.1 1.6; 10.01.1 10.1 1]; n_skis = Calc_Total_Skis(Skis) disp(n_skis) Check number of Skis 1 Variable n_skis has an incorrect value. Check number of Skis 2 Variable n_skis has an incorrect value