For each of the following research questions it has not been possible for you to obtain a sampling frame. Suggest the most suitable non-probability sampling technique to obtain the necessary data, giving reasons for your choice.
a. What support do people sleeping rough believe they require from social services?
b. Which television advertisements do people remember watching last weekend?
c. How do employers’ opinions vary regarding the impact of Government legislation on age discrimination?
d. How are manufacturing companies planning to respond to the introduction of road tolls?
e. Would users of the squash club be prepared to pay a 10 per cent increase in subscriptions to help fund two extra courts (answer needed by tomorrow morning!)?