Funaizhang

Member for 4 years, 10 months
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expectation

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7

Proving $E[X^4]=3σ^4$

Dec 16, 2020

3

Coin Flipping Expected Value

Dec 31, 2020

2

How many permutations of the string "000011112222" contain the substring "2020”?

Dec 19, 2020

1

How to compute normal integrals $\int_{-\infty}^\infty\Phi(x)N(x\mid\mu,\sigma^2)\,dx$ and $\int_{-\infty}^\infty\Phi(x)N(x\mid\mu,\sigma^2)x\,dx$

Oct 13, 2020

1

Occurrence of 5 consecutive tails before occurrence of 2 consecutive heads

Jan 3, 2021

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expectation

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normal-distribution

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statistics

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probability

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recursion

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