Excrciss 4 Answer each of the following questions 1. Assuming single precision IEEE 754 format, what decimal number is represented by this word: (15 pts) 2. Write down the binary representation of the decimal mumber -72.50 assuming the IEEE 754 double precision format. Then write in Hex 3. Consider the two 8-bit numbers A-10010101 and B- 01101110 a. Give the decimal equivalent of each number, assuming that the numbers are: b. Add the two binary numbers and interpret the sum, assuming that the numbers are: c. Determine the values of the C, Z, N, and V status bits after the additions. (1) unsigned (2) signed 2's complement. (1) unsigned (2) signed 2's complement 4. Calculate the AMAT for a system with the following properties: LIS hits in 1 cycle with local hit rate 50% L25 hits in 100 cycles with local hit rate 75% L35 hits in 250 cycles with local hit rate 90% Main memory always hits in 1000 cycles