Most of the answer to this use a formula similar to EX = xf(x)dx, but I don't
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Most of the answer to this use a formula similar to EX = xf(x)dx, but I don't understand why it gets divided by 2?
![image text in transcribed](https://s3.amazonaws.com/si.experts.images/answers/2024/06/6668502e839c3_3026668502e6192f.jpg)
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