Strikes Advertisements for an instructional video claim that the techniques will improve the ability of Little League pitchers to throw strikes and that, after undergoing the training, players will be able to throw strikes on at least 60% of their pitches. To test this claim, we have 20 Little Leaguers throw 50 pitches each, and we record the number of strikes. After the players participate in the training program, we repeat the test. The table shows the number of strikes each player threw before and after the training a) Is there evidence that after training players can throw strikes more than 60% of the time? b) Is there evidence that the training is effective in improving a players ability to throw strikes?
STAT 2000 Chapter 1: Learning from Data Defining Statistics: Statistics is a way of reasoning along with a collection of tools and methods, designed to help us understand the world Statistics is the scientific discipline, which consists of: o Formulating a research question o The collection of data o Describing data o Drawing conclusions or generalizations from data Our ability to answer questions and draw conclusions from data depends largely on our ability to understand variation . The key to learning from data is understanding the variation that is all around us. Definition: Statistics, as a field of study, is the science of learning from data. This definition raises two qu