In Hypothesis Testing 1, you were introduced to the ideas of hypothesis testing in the context of deciding whether a coin was fair or biased in favor of heads. In this section hypothesis testing ...

This study looks at how national public opinion polling in the United States changed from 2000 to 2022. It focuses on two aspects: the sample source(s) – that is, where the survey takers came from – ...

When auditing a company, auditors use a combination of professional judgment and statistical sampling methods to estimate account balances. Statistical sampling is an efficient way to design samples, ...

Animal studies regulators and ethicists use to determine whether an experimental drug should be tested in humans often contain poor quality data, according to a study published in PLOS Biology. The ...

Tesla and SpaceX billionaire Elon Musk said Friday his Twitter buyout was temporarily on hold. Musk said he will conduct his own research into how many Twitter users are fake accounts. Twitter said in ...