Which by the way to calculate the size of the sample by using the table of Krejcie and Morgan at 95 percent confidence level and a specific action at random from the population.
Which was used to calculate the sample size by using the table of Krejcie and Morgan at 95 percent confidence level and perform sampling of the population.
The method for calculating sample size by using the table of Krejcie and Morgan level of confidence (9 5 operations and purposive sampling from population.