Reference no: EM131550621
Question: Suppose the two sets of five measurements referred to in problems 1 and 2 actually came from one pellet, i.e., operator 1 measured the same pellet five times with piece of equipment 1 and then measured that same pellet five times with piece of equipment 2.
(a) Find a 95 % confidence interval for the ratio of the two device standard deviations (σdevice1/σdevice2). What do your limits indicate about the consistency of measurements from device 1 compared to that of measurements from device 2?
(b) Find a 95 % two-sample Satterthwaite approximate t interval for the difference in the two device averages (device 1 minus device 2). If your interval were to include 0, what would you conclude regarding device biases 1 and 2?
Problems: In a calibration study one compares outputs of a measurement device to "known" or "standard" values. What purpose does this serve?
Problems: Pellet Densification. Crocfer, Downey, Rixner, and Thomas studied the densification of Nd2O3. Pellets of this material were fired at 1,400 ?C for various lengths of time and the resulting densities measured (in g/cc). In this context, what are the measurand (x), y, , and δ?
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