Final answer:
The statement regarding funding and the number of researchers on a project is false as funding significantly influences the capacity for research personnel. Experiments can and do involve human subjects under ethical considerations, and larger sample sizes are favored for reliable results.
Step-by-step explanation:
The statement 'Funding has little influence on the number of researchers working on a given project' is false. Funding plays a critical role in determining the scope and scale of scientific research. The availability of funds not only aids in covering the expenses for equipment and supplies but also supports the salaries and scholarships of researchers. It is common for projects with substantial funding to attract and accommodate a larger number of researchers compared to underfunded projects.
In the context of research, it is true that experiments allow scientists to make cause-and-effect claims, although they may face methodological constraints. Additionally, it is false that experiments cannot be done on humans; ethical human research is essential in fields such as medicine and psychology, subject to rigorous ethical standards and review. And, it is generally true that larger sample sizes in experiments lead to more reliable and generalizable results, by reducing the impact of outliers and chance variations.