Alternative Hypothesis: (a.k.a. H 1) a statement (about a population parameter) that is contrary to the null hypothesis. Usually this is what a researcher is trying to prove. Confidence Coefficient: ...

Research and statistical analysis help us understand how the world works, how effective medications and treatments are, what influences our health, the best approach for business practices, and much ...

"We think we can make something better or find out what is going on in this interesting area if we try a bunch of things and apply several sophisticated techniques to study this." These proposals are ...

The cornerstone of scientific inquiry hinges on crafting a tentative explanation to be tested, a concept more formally known ...

Should you believe the findings of scientific studies? Amid current concerns about the public’s trust in science, old ...

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 ...

Much of running a small business is a gamble, buoyed by boldness, intuition and guts. But wise business leaders also conduct formal and informal research to inform their business decisions. Good ...