PSYC 210 Study Guide - Midterm Guide: Null Hypothesis, Statistical Hypothesis Testing, Standard Score

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Hypothesis testing procedure for deciding whether the outcome of a study (results for a sample) supports a particular theory or practical innovation (which is thought to apply to a population) The research hypothesis and null hypothesis are complete opposites. If one is true, the other cannot be. Hypothesis is also known as the alternate hypothesis (the alternative to the null hypothesis), even though the research. Theory set of principles that attempt to explain one or more facts/relationships/events; psychologists often derive specific predictions from theories that are then tested in research studies. Step 1: restate the question as a research hypothesis and a null hypothesis about the populations. The researchers are interested in the effects on babies in general. The purpose of studying samples is to know about populations. That is why it"s useful to restate the hypothesis in terms of a population. Population 1 = babies who receive the experimental treatment (vitamin) = experimental group.