MATH 1202 Lecture Notes - Lecture 10: Null Hypothesis, Blood Bank, Radon

• School: Saint Mary's University
• Department: Mathematics
• Course: MATH 1202
• Professor: Margaret Mc Kee

Document Summary

Assignment 8 (due in class on friday, nov. 20 2009) Note: the following problems might be solved in quite a few different, but correct ways. It is very important that you write down your arguments as well, not merely a numerical answer: [10+10 points] the desired percentage of sio2 in a certain type of aluminous cement is 5. 5. To test whether the true average percentage is 5. 5 for a particular production facility , 16 independently obtained samples are analyzed. Carry out a test of hypotheses using a significance level of 0. 01. Since each bottle should contain 100 tablets, the average weight per tablet should be 5 grains. Each of 100 tablets taken from a very large lot is weighted, resulting a sample average weight per tablet of 4. 87 grains and a sample standard deviation of 0. 35 grain. Test the appropriate hypothesis using = 0. 01 by first computing.