Catheters again The catheter company in Exercise 32 is reviewing its testing procedure. a) Suppose the significance level is changed to a = 0.01. Will the probability of a Type II error increase, decrease, or remain the same? b) What is meant by the power of the test the company conducts? c) Suppose the manufacturing process is slipping out of proper adjustment. As the actual mean diameter of the catheters produced gets farther and farther above the desired 2.00 mm, will the power of the quality control test increase, decrease, or remain the same? d) What could they do to improve the power of the test?

STP 231 lecture covering 1.3 I.) Sample vs. Population, Descriptive vs. Inferential statistics A.) Population: Collection of all the individuals who are in consideration for the study. Denoted by the variable N. B.) Sample: Part of the population that is sampled and the experiment is ran on them. Denoted by the variable n. C.) Example: Concussions are a rising issue in the NFL. In order to study the effect concussions have on cognitive ability 100 football players were randomly selected. i. The population would be the all of the players in the national football league. While the sample would, be the 100 football