Statistical Power. The Statistical Data Analysis tutorial page provides a good background for understanding the concept of statistical power. In very basic terms, statistical power is the likelihood of achieving statistical significance, when in fact the alternative hypothesis is true.
In 2001, the U.S. Census Bureau estimated that nearly 7 million school-age children are routinely left home alone. âDevelopmentally, children are generally ready to be home alone around the age of 12 or 13,â says Cherie Sage, State Director of Safe Kids Kansas.
The legal drinking age in Kansas is  21, and you must be 21 to work as a bartender or to sell hard liquor in a retail store. You can work as a server in a restaurant serving alcohol at age 18 and you can sell 3.2 percent beer at age 18.