"Critical region" redirects here. For the computer science notion of a "critical section", sometimes called a "critical region", see critical section.
A statistical hypothesis is a hypothesis that is testable on the basis of observing a process that is modeled via a set of random variables.[1] A statistical hypothesis test is a method of statistical inference. Commonly, two statistical data sets are compared, or a data set obtained by sampling is compared against a synthetic data set from an idealized model. A hypothesis is proposed for the statistical relationship between the two data sets, and this is compared as an alternative to an idealized null hypothesis that proposes no relationship between two data sets. The comparison is deemed statistically significant if the relationship between the data sets would be an unlikely realization of the null hypothesis according to a threshold probability—the significance level. Hypothesis tests are used in determining what outcomes of a study would lead to a rejection of the null hypothesis for a pre-specified level of significance. The process of distinguishing between the null hypothesis and the alternative hypothesis is aided by identifying two conceptual types of errors (type 1 & type 2), and by specifying parametric limits on e.g. how much type 1 error will be permitted.
An alternative framework for statistical hypothesis testing is to specify a set of statistical models, one for each candidate hypothesis, and then use model selection techniques to choose the most appropriate model.[2] The most common selection techniques are based on either Akaike information criterion or Bayes factor.
Statistical hypothesis testing is sometimes called confirmatory data analysis. It can be contrasted with exploratory data analysis, which may not have pre-specified hypotheses.
A is the correct answer to this question
Answer:Mr. Osorio is a science teacher who is making a presentation to the school board to address the problems of low student interest and even lower student test scores in science. As an answer to these problems, he presents an argument that all science classes should go to at least one field trip per quarter, beginning with a trip to the newest roller coaster ride in the state! How could he BEST connect the passage, A Screamingly Good Science Lesson to his argument?A)as a counter-argument that field trips can be inexpensive and safeB)as a counter-argument to demonstrate science is as important as social studiesC)as an example of an activity that can teach science and be fun at the same timeD)as an example that potential energy and kinetic energy are valid topics of study
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