As a thumb rule a minimum of 50 randomly selected samples must be chosen for. process performance studies and a minimum of 20 subgroups (of sample size, preferably of at least 4 or 5) must be chosen for process capability studies.
: a usually iced drink of wine or distilled liquor mixed with flavoring ingredients. : something resembling or suggesting such a drink as being a mixture of often diverse elements or ingredients. : a mixture of agents usually in solution that is taken or used especially for medical treatment or diagnosis. : of, relating to, or set aside for cocktails. : designed for semiformal wear.
It is called Lean. The Lean drink is a highly addictive makeshift cocktail that gets its name from the fact that when users are high on Lean they feel like they are leaning, very simply put. The ingredients in a Lean cocktail are promethazine (liquid codeine) and some type of liquid drink such as soda or fruit punch. There are some alternative ingredients that are often substituted or simply added in on occasion. The usual replacement or enhancement is PCP, Cocaine, and sometimes even Hydrocodone.