Exploring the effects of environmental and ergonomic factors on employee well-being in non-profit organizations in Pretoria, South Africa,Sample size determination and description of variables (maximum 2 pages allowed) 6.1 Describe your study population and study sample for your study. Include the study sample calculation and explain the parameters you used in the calculation. 6.2 Define your exposure and outcome variables. Remember to include a brief introduction and aim for the study for context