Question: Process standards are μ = 100 and σ = 7, and observations from the process are normally distributed. A Shewhart x chart is being considered for use in monitoring the process.
(a) The charts with n = 5 and n = 10 will have different control limits. Why?
(b) The charts with n = 5 and n = 10 will have the same ARL if process parameters remain at standard values. Why?