If the data falls in the critical region, statisticians reject the null hypothesis in favor of the alternative. A one-tailed test in statistics is used to determine if a sample mean is significantly ...

If the P value is less than 5%, reject the null hypothesis; if the P value is .05 or more, don't reject the null hypothesis. Statistics textbooks -- and statisticians for that matter -- focus almost ...

Those who have been in my classes know that I often bring in knowledge from other disciplines to add to our understanding of the process of entrepreneurship. In any given day I might bring in concepts ...

Finally, after many hours of packing and loading, the bags are in the car, the children in their booster seats and the snack bag in easy reach; everyone is buckled in and my hand is on the ignition ...

At times we wish to examine statistical evidence, and determine whether it supports or contradicts a claim that has been made (or that we might wish to make) concerning the entire population. This is ...

Did you ever wonder why 19th century pirates are often represented wearing eye patches? I never did, because I assumed that it was for the obvious reason: they had lost an eye. Pirates, like many ...

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The Christian Science Church, and we’ve always been transparent about that. The Church publishes the Monitor ...

Objection: Natural variability is the null hypothesis; there must be compelling evidence of an anthropogenic CO2 warming effect before we take it seriously. Answer: The null hypothesis is a ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...