is the sampling plan below right? The Nelson plant has a total workforce of 300 employees. A researcher chose a sample of 23 participants from this population, without any restrictions based on gender or sex. The method used for this selection was simple random sampling. This is the most basic form of probability sampling, which requires each member of the population to have a known, non-zero chance of being selected. In this case, every employee had an equal opportunity to be chosen. The sample size for this study was determined using a formula developed by Yamane Taro in 1967. This formula is commonly used due to its simplicity and widespread application in determining sample sizes. = _ 1 + ()2 We are assuming a known population size, N, which is 300. We are also working with an 80% confidence interval and an error level, denoted as e, of 0.20, which is equivalent to 20%. = _300_______ 1 + 300(0.20)2 Therefore the sample size = 23