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  1. M

    Expectation value and standard deviation of hair count for rare species

    i have solved that question but could anybody please tell me some thing about how to grade the concept and some thing about tensor in more easy way
  2. M

    Expectation value and standard deviation of hair count for rare species

    the number of hairs Nsub.1 on a certain rare species can only be the number 2sup.l(l=0,1,2...) The probability of finding such an animal with 2sup.l hairs is exp-1/l ! what is the expectation,<N>? what is deltaN?
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