(2) A mixed powder sample consists of two components A and B in proportion of 20% and 80%. The particles are spherical and have a density of pa=800 and p = 1000 kg/m . Cumulative undersize mass distribution of particle A and B is given below: Size, x, um 499 420 355 250 190 150 75 53 0 FAX) 1.00 0.98 0.96 0.94 0.90 0.75 0.05 0 0 F(x) 1 1 0.97 0.96 0.95 0.65 0.25 0.05 0 Sampling of this this powder on a 10 mg sample amount gives a constant standard deviation of +0.002, please determine if this sample is randomly mixed? (2) A mixed powder sample consists of two components A and B in proportion of 20% and 80%. The particles are spherical and have a density of pa=800 and p = 1000 kg/m . Cumulative undersize mass distribution of particle A and B is given below: Size, x, um 499 420 355 250 190 150 75 53 0 FAX) 1.00 0.98 0.96 0.94 0.90 0.75 0.05 0 0 F(x) 1 1 0.97 0.96 0.95 0.65 0.25 0.05 0 Sampling of this this powder on a 10 mg sample amount gives a constant standard deviation of +0.002, please determine if this sample is randomly mixed