. Households with Four Television Networks A survey showed the number of viewers and number of households of four television networks. Find the average number of viewers, using the weighted mean. (3-1) 1.43 viewers Households 1.4 0.8 0.3 1.6 Viewers (in millions) 1.6 0.8 0.4 1.8 Source: Nielsen Media Research. Investment Earnings An investor calculated these percentages of each of three stock investments with payoffs as shown. Find the average payoff. Use the weighted mean. (3-1) $4700.00 Stock Percent Payoff A 30 $10,000 B 50 3,000 C 20 1,000 Years of Service of Employees In an advertisement