4. Perform the multiplication. Show all the steps by hand. No Calculators. 5. A flu epidemic hits a large city. Each resident of the city is either sick, well, or a carrier. The proportion of people in each of the categories is expressed by the following matrix: Age 0 - 10 10 - 30 Over 30 A = Well 0.70 0.70 0.60 Sick 0.10 0.20 0.30 Carrier 0.20 0.10 0.10 The population of the city is distributed by age and sex as follows: Male Female 0 - 10 60, 000 65, 000 B = Age 10 - 30 100, 000 110, 000 Over 30 200, 000 230, 000 (a) Compute AB. (b) How many sick males are there? (c) How many female carriers are there