Q2) Write a program that takes the average and variance of an array. The average and variance are calculated by: Var(z) = (x,n-E(X))2 run the following command in your terminal, in the same directory as your sort.c file. This command will create a new file that you are to change and submit: sed '3d;9d;21,30d' sort.c > avg var.c The sed command is used to remove lines from a file, while the > stores the output of a command (whatever is printed in the terminal) to a new file. The "3d;9d:21,30d' argument states to remove lines 3, 9, and 21-30 from the sort.c file, avg var.c is now the code to request a size of an array, allocate memory for the array, and fill the array. You must add functionality by adjusting the code to calculate the average and variance of the array. All lines added to the code must be after line 18. Print the average and variance such that the output appears as below (there are NO double spaces): Enter the array size: 3 Enter 3 integers: 1 2 3 The average is: 2.00 The variance is: 0.67 Note: avg var.c is the file you will turn in for this question inside the .tar file. Q3) Write a program that counts the number of times a specific character occurs in a string. For example, if the string is "hello world" and the character being counted is I', the prgram Solutions.zip d' EE 379 Lab 2.docx EE379S18 Lab2(3) pdf a MP2 Fourier Analysis.docx