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Ralph has been using a drug on a regular basis for several years.He has now developed damaged nasal membranes,a host of respiratory problems and cardiovascular disease.It is most likely that Ralph is a chronic user of
Confidence Interval
A range of values, derived from statistical analysis, that is likely to contain the value of an unknown parameter with a specified level of confidence.
Null Hypothesis
A theory that assumes there is no statistical significance in a set of given observations, with the aim of testing the validity of this assumption.
Student-t
A probability distribution used in statistical science, particularly in scenarios with small sample sizes or unknown variances.
F-distribution
A probability distribution that arises in the testing of whether two sample variances are equal, used in ANOVA and other tests involving multiple variances.
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