Quiz 3 for STAT 110, Fall 2006 - Experimental Design and Hypothesis Testing, Quizzes of Statistics

Download Quiz 3 for STAT 110, Fall 2006 - Experimental Design and Hypothesis Testing and more Quizzes Statistics in PDF only on Docsity! STAT 110 FALL, 2006 QUIZ 3 1. What question did the Physician’s Health Study attempt to answer? (a) Are sexually transmitted diseases more pervasive among certain income classes? (b) Is there a relationship between the drug Memantine and Alzheimer’s disease? (c) Does taking aspirin reduce the chance of heart attacks? (d) Which groups of males are more susceptible to prostate cancer? 2. To study exercise and bone loss, a researcher recruits 1,000 post-menopausal women, of various ethnicity, who exercise regularly. She matches each woman with a similar post-menopausal woman who does not exercise regularly. She monitors both groups and records the amount of bone loss after 5 years. What is response variable measured in this situation? (a) whether or not women are in the post-menopausal stage. (b) exercise (c) ethnicity (d) amount of bone loss 3. Your textbook describes an experiment to compare the effectiveness of three television commercials for the same product. The following design appears in your text: Which experimental design best describes this experiment? (a) completely randomized design (b) randomized block design (c) matched pairs design (d) Latin-square design 4. What are the three basic principles of experimental design? (a) bias, non-response, and undercoverage (b) power, variability, and consistency (c) extrapolation, lack of realism, and stratification (d) control, randomization, and replication PAGE 1