Begin a new script and start a new code cell for Problem 1 by using 88. Use rand to create an 8 x7 matrix A of random numbers in the range [0, 1]. (i) In one line of code, change rows 3 and 6 of A to two. (ii) Next, use one line of code to change columns 2 through 5 of A to three. (iii) Next, use one line of code to change elements of A that are in odd numbered rows and in even numbered columns to 0.5 (i.e. A(1,2), A(1,4), A(1, 6)..) (iv) Finally, use for loops and if statements to change all elements in A that are less than 0.5 to zero. Hint: Do a help search on size, :, for, if