In 1879, A.A. Michelson measured the velocity of light in air using a modification of a method proposed by the French physicist Foucault. Twenty of these measurements are in table 6E.27 (the value reported is in kilometers per second and has 299,000 subtracted from it). Use these data to set up individuals and moving range control charts. Is there some evidence that the measurements of the velocity of light are normally distributed? O the measurements exhibit statistical control? Revise the control limits if necessary.

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s TABLE 6E.27 Velocity of Light Data for Exercise 6.69 Measurement Velocity Measurement Velocity 850 1000 740 980 900 930 1070 650 930 760 12 13 14 15 16 17 18 19 850 810 950 1000 980 1000 980 960 880 960