Examlex
Which of the following are area-wide education projects designed to inform people of the risks of stress, alcohol abuse, high blood pressure, STDs, etc.; to provide role models to show people how to improve their own health; and to direct people to services for health screening, advice, and treatment?
Null Hypothesis
In statistics, it posits that there is no effect or difference among the groups being studied or variables being compared.
Alpha
In hypothesis testing, alpha level represents the threshold for rejecting the null hypothesis, often set at 0.05 or 5% risk of Type I error.
T-statistic
A statistic calculated from a dataset to compare the mean of the data to a hypothetical mean as part of a t-test.
Critical Value
The boundary value from a statistical distribution where, if the observed test statistic is beyond this point, the null hypothesis is rejected.
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