A manufacturer of clay roofing tiles would like to investigate the effect of clay type on the proportion of tiles that crack in the kiln during firing. Two different types of clay are to be considered. One hundred tiles can be placed in the kiln at any one time. Firing temperature varies slightly at different locations in the kiln, and firing temperature may also affect cracking. Discuss the design of an experiment to collect information that could be used to decide between the two clay types. How does your proposed design deal with the extraneous variable temperature?
Answer to relevant QuestionsA mortgage lender routinely places advertisements in a local newspaper. The advertisements are of three different types: one focusing on low interest rates, one featuring low fees for first-time buyers, and one appealing to ...The paper “Lessons from Pacemaker Implantations” (Journal of the American Medical Association : 231– 232) gave the results of a study that followed 89 heart patients who had received electronic pacemakers. The ...A newspaper headline stated that at a recent budget workshop, nearly three dozen people supported a sales tax increase to help deal with the city’s financial deficit (San Luis Obispo Tribune, January 22, 2005). This ...Poor fitness in adolescents and adults increases the risk of cardiovascular disease. In a study of 3110 adolescents and 2205 adults ( Journal of the American Medical Association, December 21, 2005), researchers found 33.6% ...A report from Texas Transportation Institute (Texas A&M University System, 2005) titled “Congestion Reduction Strategies” included the accompanying data on extra travel time for peak travel time in hours per year per ...
Post your question