Introduction Cannabis use is common in the USA and is associated with adverse outcomes across many domains, including sleep ...

Lee Zeldin, the E.P.A. administrator, revived a plan created during the first Trump administration to end the testing of chemicals on mammals. By Lisa Friedman The Environmental Protection Agency will ...

Statistical models predict stock trends using historical data and mathematical equations. Common statistical models include regression, time series, and risk assessment tools. Effective use depends on ...

During his Ph.D. research, mathematician Tyron Lardy worked on a new approach to hypothesis testing. Instead of the traditional p-value, he uses so-called e-values. These turn out to be more ...

The deltatest package provides deltatest(), a function for performing two-sample Z-tests using the delta method. It is designed for common settings in online A/B testing where: randomization is done ...