Question: Consider the X control chart in Fig. 15-3. Suppose that the mean shifts to 74.010 millimeters. (a) What is the probability that this shift is

Consider the X control chart in Fig. 15-3. Suppose that the mean shifts to 74.010 millimeters.

(a) What is the probability that this shift is detected on the next sample?

(b) What is the ARL after the shift?


Fig. 15-13

15 10 5 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 LSL USL Nominal dimension Vane

15 10 5 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 LSL USL Nominal dimension Vane opening Frequency 20

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