Output Output should contain 1 line of output, containing a single integer representing the least possible noise level sum. Sample Input 4 0 1 2 3 4056 7809 8760 Sample Output 51

Exp2: A vectory is given by  X = [−3.5  −5  6.2  11  0  8.1  −9  0  3  −1  3  2.5]   Using conditional statement and loops, develop a program that creates two vectors from X: Vector P contains all positive elements of X Vector N contains the negative elements of X. The elements in new vectors are in the same order as in X. Please show me how to code this on matlab. I have tried watching tutorials on youtube and can not figure out how to code this for the life of me. Thank you.

Python   Your class announced a new grade policy: any of your quiz score that are less than 80 will have 2 points added to them.You decide to check whether the proposed grade replacement policy changes your overall quiz grade. Write a function grade_change that takes as input* a list of quiz grades* a list of letter grade cutoffsand returns the two average scores (before and after the policy) and their corresponding letter grades packaged as a list of tuples using the following order: [(avg1, letter1), (avg2, letter2)]First, you need to * compute the average score of the quiz grades* call the get_letter_grade to get the letter grade for the current average* find the quiz scores that are less than 80 in the list and increment each by 2* recompute the average score* call the get_letter_grade to get the letter grade for the new averageFinally, you return the requested result.   Just to help you test your code, here's the main program and its output:if __name__ == "__main__":…