SoPC stands for A) Sell only pretty commodities B) Statutes of Prime Commisions C) Standards of Professional Conduct D) Sale or Peak Convention What is statement is true? A) Type I error is always smaller than Type II - Error B) the analytic normal distribution has sometimes excess kurtosis C) the normal distribution should always be preferred to other distributions D) A t-Distribution can be approximated by a normal distribution (in some cases).