Question

Can someone please help me with the math question? I will give you a shiny medal!

Answer 1

B. Since the distribution of blood alcohol concentrations is not normally distributed​ (highly skewed​ right), the sample must be large so that the distribution of the sample mean will be approximately normal.

I forgot that data obtained must come from a population that is normally distributed or the sample size is n (greater than or equal to) 30 OR, the sample size is 5% or less of the population size. n < 0.05N