Only answer Part A please: What are the control limits for x-bar control charts with alpha=.004 probability limit and sample size of 36?

Problem 4: What are the control limits for x-bar control charts with a-0.004 probability limit and sample size of 36? Assume the mean shift is o (o is the process standard deviation, that is, the standard deviation of individual observations), what is the type II error under this mean shift