What is bayesian probability? how is it used in research? (site 1)

"Bayesian probability" is the process of using probability to try to predict the likelihood of certain events occurring in the future. Bayesian probability is generally expressed as a percentage. In its most basic form, it is the measure of confidence, or belief, that a person holds in a proposition.Using Bayesian probability allows a researcher to judge the amount of confidence that they have in a particular result. Frequency probability, via the traditional null hypothesisrestricts the researcher to yes and no answers. Bayesian methods are becoming another tool for assessing the viability of a research hypothesis.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.