Is the standard deviation of the population of 1.186
is the Z factor when determining the size of type I error at a confidence level of 95%, equal to 1.96 , is the Z factor when determining the size of type II error to admit mistakes 20% 0.84 is. The difference of the average, according to research that has been studied before 0.79 in the research sample size.
การแปล กรุณารอสักครู่..
