The COVID-19 pandemic is overwhelming the functioning and outcomes of educational systems all over the world. It affects pupils and students, although at different degrees depending on multiple factors including the country, region or districts where they live. While well-resourced countries have succeeded in managing the consequences of the COVID-19 pandemic on their educational systems by providing innovative systems for uninterrupted learning, the less endowed countries are struggling to cope with the situation. In the case of Ghana, the shutdown of schools on 15th March 2020, compounded by the associated public health and economic crises, posed major challenges to students and their teachers. While we do not know the exact impacts, we do know that academic work, especially, in pre-tertiary institutions has been negatively affected by the pandemic. In contrast, most of the public tertiary institutions resorted to the use of several virtual/electronic platforms such as Zoom, Google Meet, Microsoft teams, Google Classroom, Moodle and the likes for teaching and learning. It is worthy to note that using virtual platforms for academic work (lectures, assessment, etc) has its own challenges. In order to address the challenges associated with the use of virtual platforms for lectures among students in Ghana, the government has contracted NAKQUAYE Consult to conduct a study to ascertain the consequences of access to internet facility, reliability of the internet facility, cost of data, type of internet service provider and access to smart phone/laptop on the usage of virtual platforms for lectures using undergraduate students of University of Professional Students, Accra as a case study. A total number of 4,000 undergraduate students considered for the study are drawn from six departments comprising Accounting, Banking and Finance, Administration, Marketing, Public Relations and Information Technology. As the principal research officer of NAKQUAYE Consult:

What is the population of your proposed study and the sampling technique(s) to be adopted in selecting a sample size of 600? Justify the sampling technique(s) to be used.