C. About100 workers in a gas processing plant are exposed to the following concentrations of phosgene gas for the indicated hours. a. 2.2 ppm for 2.75 hr b. 1.5 ppm for 3.00 hr 0.1 ppm for 2.25 hr To determine the potential fatalities, there are two approaches to interpret the problem: (i) assume the same workers exposed over 8-hr (2.75 +3.00 +2.25) period, and (ii) assume each exposure is separate (i.e., independent and isolated event) with different workers. Using the Probit Eqn, 2-5 (Textbook): Y = k + k, In (CT), where in ppm and T' in min with k = -19.27, and k, = 3.69, determine the potential fatalities by the two methods as articulated above (i & ii). Briefly, interpret your results obtained by the two methods