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April 18, 2014

Homework Help: statistics

Posted by ed on Tuesday, March 20, 2012 at 1:58pm.

from generation to generation, the average age when smokers first start to smoke caties. however, the standatd deviation of that age remains constant of around 2.1 years. a survey of 40 smokers of this generation was done to see if the average starting age is at least 19. the sample average was 18.1 with a samole standatd deviation of 1.3.

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