Answer:
Type 1= 0.3 %
Explanation:
This is a 3 sigma limit given by ( μ±3σ) . Chebyshev's inequality states that at least 89% of the observations fall in the three sigma limits ( μ±3σ) . The probability increases towards 99.7% as the distribution becomes normal.
Normal distribution= 99.7% observations fall within μ ± 3σ
Type 1 Error= (100- 99.7)%= 0.3%
Upper control limit = UCL= μ + 3σ
Lower control limit = LCL= μ - 3σ
