H useysumpo U " AOC A second stage og alert has been called in a contain...
H useysumpo U " AOC A second stage og alert has been called in a contain area of Los Angeles County in which there are 90 industrial firms. An inspector will visit 30 randomly selected firms to check for violations of regulations (a) of the firms are c ally violating at least one regulation, what is the pmf of the number of firms visited by the Inspector that are in violation of at least one regulation? O MX, 30, 0.4) Onix: 30,04) O x 30, 36, 90) O DO 30,04) O bx30, 30, 90) OBX30, 36,90) are in vion, approximate them of art (a) by () If there are 900 firms in the area, of which OM 30,100,000) • 30,04) Onix: 30,04) OMX, 30, 360,000) Onbox, 30, 360, 900) O x 30, 0.4) compute and both for the cact pm and the proximating in part (h). (Round your answers to two decal plac (c) For the number that are in violation among the 30 visited out of Computex and VX for the exact pent E(X) V = Compute X) and VX for the approximating pm. F(X) - 12 VIX) - 72