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OpenStudy (anonymous):
400 draws are made at random with replacement from 5 tickets that are marked -2, -1, 0, 1, and 2 respectively. Find the sum of all the numbers drawn?
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OpenStudy (rajee_sam):
the probability of getting each no. is 1/5. So in 400 draws the no. of times each no. can be drawn is 80. So if you add all them up the sum will be 0
OpenStudy (anonymous):
yes... thnks... multiplying 0 with any number also give 0
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