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April 17, 2014

Homework Help: statistics

Posted by Anonymous on Monday, December 3, 2012 at 11:59pm.

Based on data from the National Health and Nutrition Examination Survey assume that the weights of men are normally distributed with a mean of 170 lbs. and a standard deviation of 30lbs.

a. Find the probability that a man randomly selected from the above population will have a weight equal to orless than 207.5 lbs.


b. Find the probability thata man randomly selected from the above population will have weight equal to or greater than 125 lbs.






__________


c. Find the probability that a man is randomly selected from the above population will have a weight between125 lbs and 215 lbs.






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