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

- statistics -
**Din123**, Friday, May 3, 2013 at 5:18pm
the number of times positive numbers appear is 160

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**Din123**, Friday, May 3, 2013 at 5:22pm
the sum of the positive numbers drawn is 240

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**AmmanJordan**, Friday, May 3, 2013 at 5:57pm
Thanks you Din 123, the answer of B is 0 the 1 and 3 are correct.

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