This is where black box theoretical statistics goes horribly wrong. Look at the histogram. That tells you what you need to know in this case. That process is great. At least for the time frame in which you sampled. The disparate points that likely broke ‘normailty’ are trivially small. The goal is to make good parts not to make good p values. Sorry about your customer. Perhaps try talking to them. Even the American statistical association has finally acknowledged the weaknesses and century long misinterpretations regarding the p value.
The manipulation of mathematical formulas is no substitute for thinking.
The manipulation of mathematical formulas is no substitute for thinking.
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