Question 12.59

12.59 Bone density revisited.

Refer to Exercise 12.26 (page 627), in which you were asked to construct and charts for the calibration data from a Lunar bone densitometer shown in Table 12.6.

bone

  1. Make an chart and comment on control of the process variation.
  2. Based on the standard deviations, make an chart and comment on control of process level.

12.59

(a) , using and .
(b) For . The process is in control.