2.2question only use the 2nd channel represent emg solve 9,10,11 and 12 sub questions onle and provide matlab code please

2) EMG signal processing. (10 points) For this question, you are going to work on EMG_gait.mat file. There are 70 channels simultaneous recordings were saved in this file, not all of them emg data. 2.1 After you load the data, investigate it, answer following questions (3 points). Answer following questions 1. How many emg channels are present. 2. What are the names of muscles investigated. 3. What is the sampling rate for emg channels. 4. How the emg recordings are saved? in columns or rows. 5. Is the time vector provided? 6. How the time recordings are saved? In columns or rows. 2.2 Then write a script as follows (7 points); i) Load the data 2) Plot time series signal for an emg channel. Corresponding name of the muscle is given in the file. So please provide the title for channel that you worked on. How you're going to decide on which channel data you are going to work on? This part is going to change from student to student. Which emg you're going to work on is going to change as the description below; A-C 2nd channel represent Emg 3rd channel represent Emg 4th channel represent Emg I-K 5th channel represent Emg L-N 6th channel represent Emg O-P 7th channel represent Emg Q-5 8th channel represent Emg 9th channel represent Emg WZ 10th channel represent Emg D-F G-1 T-V 9) Normalize the 'emg signal 10) Plot Normalized signal 11) Calculare rms 12) Plot RMS-EMG