Calculate the probability that an incontrol process will yie

Calculate the probability that an in-control process will yield the “Simplified” Runs Rule situation (Besterfield, Figure 5-13). Only calculate on one side of the centerline, no need to account for both sides

Solution

Only for 1 side of the center line

favorable cases = 1.5 sigma

posibilities cases = 3 sigma

Probability = favorable / posibilities = 1.5 sigma / 3 sigma = 0.5

PROBABILITY = 0.5