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when you're horny, but have to study maths

E[S] = μE[N]

😳

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4 comments
  • I don't get it...

    • This is from my probability class in an actuarial sciences mba. Xj is a random variable of the value of a claim, N is another random variable of the number of claims in a year, S is another random variable of the total sum of claims in a year.