Aa Aa 1. An introduction to experimental design Case study 1. New recruits at a
ID: 3356903 • Letter: A
Question
Aa Aa 1. An introduction to experimental design Case study 1. New recruits at a multinational company were randomly assigned to different training programs for their first 2 months of work. At the end of training, their satisfaction levels were measured through a confidential survey The study is an example of an study Case study 2. Intel is the leading producer of computer memory chips. A manager at one of its production facilities would like to choose between five different production processes. As a test, he measured the number of defective chips produced per day for each of the five production processes over 2 weeks. In this experimental study, the response variable is the factor is the , and the An example of a response is is , and an example of a treatment . (Hint: Note that a response is a specific value of a response variable.) Case study 3. Researchers at a medical school conducted an experiment to test the effectiveness of a new drug for lowering cholesterol. The 52 subjects who volunteered for the study were each given a randomly generated number. Subjects with an odd number were given the new drug, while those with an even number were given a placebo. The the differences were computed. cholesterol levels of each subject were measured before and after the treatment, and In this study, the experimental units are and the treatments are Copy . This experiment randomized design, because treatments called a randomly assigned to experimental units. It is therefore experiment.Explanation / Answer
1) The Program evaluation method used to evaluate the difference between group programmes, projects, and policies.
2) Defective chips per day is dependent variable and factor is 5 different types of chips
An example, Defective chips let 5 per day of chip type Pentium dual core
3) The experiments units are Cholesterol, and the treatments are new drug and placebo. This experiment 52 subjects a randomised design, because treatments of odd and even randomly assigned to experimental units. It is called a Random assignment or random placement experiment.