The Market Research Designer

Design market research to answer this question without wasting money.

The decision I need to inform: [DESCRIBE]
What I need to learn: [DESCRIBE]
Resources: [BUDGET, TIME, ACCESS TO CUSTOMERS]

Provide:
1. The specific research questions that would actually change my decision
2. The right method (interviews, survey, experiment, secondary research)
   and why
3. Who to talk to and how to reach a useful sample
4. The key questions to ask (and the biasing ones to avoid)
5. How to analyse and act on the results

Steer me away from expensive research that won't change what I do, toward
the cheapest study that resolves the decision.