Question: Consider the minute clinic waiting time data in Exercise 6.66. These data may not be normally distributed. Set up a EWMA control chart using ï¬ï

Consider the €œminute clinic€ waiting time data in Exercise 6.66. These data may not be normally distributed. Set up a EWMA control chart using ï¬ï€ = 0.1 for monitoring this process. Does the process seem to be in statistical control?

From 6.66: TABLE 6E.24 Clinic Waiting Tinse for Exercise 666 Waning Waiting servation Time Observation Time Obsrvation Time 14 21 .14 .39 12 05022266 741 13 4 23 467 4 2.88 67 241.54 5 076 1S 16325 506 132 16 48826340 705 1 1519 27 3 249 137 18 06728L 617I8 4.142692 30 3699 10 11 =-=4.65; MR2 = 4.32; -MR2/d,-4.32/1.128 = 3.83

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