The term is best known as a mechanical effect, and is used as an analogy to a falling row of dominoes. It typically refers to a linked sequence of events where the time between successive events is relatively small.
9 terms. What is the difference between a z test and a t-test. Z: tests probability sample was drawn from a population with a known mean and known standard deviation. T; tests probability sample was drawn from a population with known mean but unknown standard deviation. z-test.
The hypothesis test for this type of data is called a ât-Testâ. A t-Test is commonly used to determine if two different data sets have a different average. In our example, we would like to know if the average ERA is different before and after the alleged drug use.