Math 246 Project 11 Sample KEY

Math 246 Project 11 Sample KEY - Math 246 KEY Project...

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Math 246. KEY Project Eleven ___________/20 Chapter 11: READ EVERYTHING CAREFULLY : Show all your work. Indicate clearly the methods you use, because you will be graded on the correctness of your methods as well as on the accuracy of your results and explanation. Use complete sentences when appropriate; u se complete mathematical sentences when appropriate; when necessary show your verification of the assumptions. Failure to do so may result in a lower score. If you present parallel solutions, I will grade the lesser of the two. A. Laparoscopic gastric bypass surgery reduces the size of the stomach and can cause malabsorption of nutrients, leading to weight loss according to webmd.com. Researchers wanted to test the claim that body mass index (BMI) reduction is significantly greater than zero ten months after surgery. They selected 110 patients who elected to have laparoscopic gastric bypass surgery and measured their BMI prior to surgery. After 10 months they again measured the BMI. The mean reduction in BMI in the 110 patients was found to be 12.61 with a standard deviation of 4.90. (Use MINITAB where appropriate) Question: What type of experimental design is this? Why? This matched paired design because the block of size two is a person and the treatments are BMI before and after surgery. Construct a 90% confidence interval for the mean BMI reduction after laparoscopic gastric bypass surgery. Write a sentence that a doctor could read to his (her) patients that explains the expected BMI
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This note was uploaded on 05/17/2010 for the course MATH 246 taught by Professor Applebaugh during the Spring '10 term at University of Toronto.

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Math 246 Project 11 Sample KEY - Math 246 KEY Project...

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