A 3-column table with 4 rows. Column 1 has entries Catfish, bass, trout, all fish. Column 2 is labeled Sample 1 with entries 3,
9, 8, 20. Column 3 is labeled Sample 2 with entries 5, 9, 6, 20. The proportion used to find the average number of trout you would expect to live in the pond is 7 20 = x 400 . Solve the proportion to find the expected number of trout in the population. The expected number of trout in the population is .