Let n be a positive integer. We sample n numbers a1, a2,..., an from the set...

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Let n be a positive integer. We sample n numbers a1, a2,..., an from the set...

Let n be a positive integer. We sample n numbers a1, a2,..., an
from the set {1,...,n} uniformly at random, with replacement. We say that
picks i and j with are a match if ai = aj, i < j. What is the expected total
number of matches? Use indicators.

math Statistics-And-Probability

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Answer 1

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oluor et us ake ample eplaienes motch n (nt) 2VL 2

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Let n be a positive integer. We sample n numbers a1, a2,..., an from the set...

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Let n be a positive integer. We sample n numbers a1, a2,..., an from the set...