You need to undertake a face-to-face interview survey of managing directors of small to medium-sized organizations in your country.
From the data you collect you need to be able to generalize about the attitude of such managing directors to recent changes in government policy towards these firms. Your generalizations need to be accurate to within plus or minus 5 per cent.
And you know there are at least 100,000 managing directors of small to medium-sized organizations from which to select your sample.
Unfortunately, you have limited resources to pay for interviewers, travelling and other associated costs.
1. List and explain the various types of probability and non-probability sampling techniques?
2. Which technique would you choose for this research? Why?