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May 27, 2015

Homework Help: statistics

Posted by AmmanJordan on Friday, May 3, 2013 at 4:34am.

400 draws are made at random with replacement from 5 tickets that are marked -2, -1, 0, 1, and 2 respectively. Find the expected value of:
1. the number of times positive numbers appear
2. the sum of all the numbers drawn
3. the sum of the positive numbers drawn

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