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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
| Last Sign in: | 398 Weeks Ago, 2 Days Ago |
| Questions Answered: | 66690 |
| Tutorials Posted: | 66688 |
MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
5.31 A taxi company is trying to decide whether to purchase brand A or brand B tires for its fleet of taxis. To estimate the difference in the two brands, an exper- iment is conducted using 12 of each brand. The tires are run until they wear out. The results are
Find a 95% confidence interval for the mean difference between the yields of the two varieties, assuming the differences of yields to be approximately normally dis- tributed. Explain why pairing is necessary in this prob- lem.
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