This tutorial overviews the factors that you need to consider when determining the number of null hypotheses you need to pose per research question for a quantitative research proposal.
This video is part of A Guide for Developing a Quantitative Research Proposal, an Instructional Unit that breaks the large task of writing a proposal into smaller tasks. Access the guide at http://thedoctoraljourney.com/research/how-to-build-quantitative-research-plan/
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